Cindy, George and Lee washed their hands of Caylee almost two years ago.
IMO they will speak on Casey's behalf.
I don't know if anyone can speak on Caylee's behalf if they didn't have regular contact with her through out her two years on this earth.
If it is possible for the dead to look upon the earth I woud like to think that Caylee would be so happy to know that we in the blog world care so much for her and have spoken up for her every day from the very first time we heard her name.
I am unsure how this would work in practice and this may be a better question for the legal thread.
Floridian law, if IIRC allows the next of kin/relatives of the victim in a murder trial to make a victim impact statement by way of allocution not subject to cross-examination.
ICA is the next of kin of the victim in this case but I am almost certain she wouldn't be allowed to make a "Victim Impact Statement" at her own sentencing upon any conviction she might have for murdering her daughter. That would be quite a bizarre, although interesting, situation.
However, GA/CA have not been charged with or convicted of any crime in relation to Caylee's death. Therefore, I am almost certain they have a
right under Floridian law to make a victim impact statement at any sentencing and not be subject to cross-examination. Although I imagine there will be some degree of restriction on what they can/cannot say in such a Victim Impact Statement to ensure proper court decorum (no swearing), right to due process (no insuations/speculations), I don't think there will be much restricition on the content of this Victim Impact Statement.
Therefore, depending upon whether or not they support their daughter (which I imagine they still do) I think it would seem possible they could use a Victim Impact Statement to make a plea for LWOP rather then DP.
I cannot be 100% certain but I am very sure that Jesse will not be allowed to make a victim impact statement. However, might he be able to appear as a witness to describe Caylee's attributes to the jury and what a nice little girl she was?
*Delves into the FL statute* (will be back in a bit)