I don't think it's unrealistic and a very good theory. It depends on what you believe happened the day Caylee died. I believe it was premeditated, FCA knew exactly what she was doing at the time. She truly believe that CA & GA forced her into the decision by their treatment and actions towards FCA. She is incapable of bonding with anyone, had no remorse afterwards and simply left the memory behind just like she did with Caylees body and her car. When things no longer serve a purpose or stink too much or get in her way of achieving what she wants..she just gets rid of it and never worries about it again. FCA does not dwell on the negative. She left Caylee in the same area she left her pets that died, wrapped her up the same way the family had done with their pets. She saw no difference between the two...something very wrong with that way of thinking!
She took the values she was raised with and twisted them to suit her needs. Not dwelling on the negative to her means you can kill your child and not dwell on it, she looked at the benefits. Unconditional love means you can do anything, even take your own childs life and you will be forgiven. CA said in Dr. P interview that FCA believes that when you die your soul leaves your body so that meant she could leave her childs body in a dump because it's not really a person anymore..just a shell..means nothing.
I've said before I believe because FCA was raised believing she could do no wrong, she lied and stole on a regular basis and CA made excuses, allowed FCA to get away with it but at the same time CA expected her children to be perfect. She would defend her childrens actions to everyone but then turn around and punish FCA for not being perfect by telling her she was a rotten mother, worthless to any man, no future for marriage or career.
CA and FCA had a fight over FCA stealing money from CA's father, just another example that CA loved everyone more than she loved FCA. I believe LA statement that CA physically attacked FCA. That was the straw that broke the camels back. FCA knew what she was going to do and felt justified doing it but believes CA and GA are the ones who really commited murder. They are to blame for what happened. She hated GA the most, CA was next and LA the least. We can see by the accusations, GA molested her and forced her to put Caylee in the swamp, CA left the pool ladder up and LA was let off the hook.
They said during the trial that a thief and lier does not make a murderer. If you consider a child raised to believe everything they do will be excused and defended by the mother then whats to stop the child from moving on to more serious crimes. FCA told CA the nannys name was Zanny. FCA believed she was telling CA she was using drugs on Caylee, CA didn't ask any questions so it must have been ok. We don't know FCA's past, did she play a part in the familys pets dying? Was she using chloroform on CA's dogs for practice? If you really look at FCA and the way her mind works, it's a very twisted and scary place. It's hard for most people to believe that any person let alone a young woman could be so sick but look at how many examples we have seen in the past!