These are good observations and questions - ones I have been considering as well.
I will say that I do not think we know that the Mother has taken the child away. The child may have run away or threatened to run away and the Mother may have followed. I think it more likely that the Mother and child decided together to go away and defy the order. A Mother of course has some control over a 13 year old boy, but both the Mother and boy seem to be of the same mind regarding the Judge's position.
I try to put myself in her shoes. If my 13-year-old said, "Mom - I don't care what the Judge says - I'm not letting them give me chemo" and I agreed with him 100%, it would be very difficult to convince him to obey. If it were my child and I believed in the rightness of his desires, I would want to respect and honor them and it would be difficult not to.
My other option would be to say to the child, "I'm going to take you because if I don't, I'll get in huge trouble and go to jail. So I'll take you and I'll just let you handle resisting it on your own." That is an option I would consider, but it seems fairly lame to throw the child to the wolves solo just because I don;'t want to go to jail. I'd much rather stand by my child.
We can talk about percentages and what we believe will happen until we are blue in the face, but the fact remains that this boy does not think chemo (ie. poison) is the best course of action and his mother does not think chemo (ie. poison) is the best course of action and they both seem (at least the Judge wrote that they seemed) VERY sincere in this belief. It's not like this Mom believes her son is going to die without the chemo, and so she's not going to let him have it because she wants him to die.
Your last question is the most interesting - if the Mom and boy keep him away from the chemo and the boy dies, can she be charged with murder. I think under MN law, she can and I will bet money that she knows this if her attorney is worth a salt.
To me the most interesting question remains - how far are they willing to go to make this boy take chemo into his body and how far is this boy willing to go to make sure that doesn't happen? A Judge surely has power, but I'd say things would get even more heated against the State and Western medicine if the Judge ordered brute force and the docs were willing to dish it out - all in the name of putting poison in someone against his wishes and the wishes of his family.
On the subject of the child's competence to make this decision for himself, I have to say that in this instance I don't believe that he is competent.
Under normal circumstances you will find my opinions to be all over the map on the subject of legal minority/majority and competence. To be honest I'm inclined to find many legal "minors" frequently exhibiting more "mature" judgment than their theoretically "competent" elders. In some cases I wonder if the commonly assumed vector of maturity isn't reversed.
However,that being said I believe that circumstances in this case clearly suggest that the minor in question is not in any fashion making an informed decision based on careful consideration of all the facts.
This leads us to the subject of the guardians' participation. I am not convinced that this parent would be unable to influence the child's behavior regardless of her personal convictions, but the point is moot, since she is clearly unwilling to.
So now the question becomes framed by the validity of a custodial parent's
beliefs as opposed to socially accepted practice.
This deserves some analogy. If a parent
believes that wearing a seat belt is more dangerous than going without, and their child is thrown through the windshield and killed in an otherwise survivable accident what is their culpability? What if they
believe that the proper way to teach swimming to a three year old is to throw them in the water, turn, and walk away? What responsibility do they bear if the child drowns?
I could go on endlessly, and I'm sure you could help.
This sort of question is easily answered
except when certain topics are involved. Religion is one such. For reasons I have never understood the quality of "belief" is more authoritative when it is religious than when it is not.
Another seems to be medicine. I find this particularly puzzling when so many aspects of medicine are demonstrably quantitative. Facts trump belief. I concede that there may be times when facts can appear to be in contention, but this in no way improves the argument for "belief", it merely indicates the need for further analysis of available data, or for the pursuit of new data.
When the two are combined, religion and medicine, all rationality seems to flee.
If this child had been diagnosed with acute appendicitis and the parents had behaved in exactly the fashion that they have, would your opinion of their behavior be the same? Bear in mind that a ruptured appendix just might be more survivable without treatment than the Hodgkin's. Certainly a merely inflamed one would be.
I'm not comfortable with the concept that belief, regardless of how sincere it might be, should have a great measure of weight when considering culpability. Perhaps this is because I am most accustomed to seeing the concept applied as an explanation for the refusal to consider evidence in contradiction of said belief.
The more I contemplate the particular circumstances of this case the more inclined I am to feel that these parents should be held responsible in the event of the child's death, if that death results from a refusal of treatment.
I am much more conflicted about your final point. The larger question of forced treatment, absent the consideration of competency, is a perplexing one. I'd love to pursue it, and I don't have any general position to start from. Is this thread a suitable forum?