"if"
Probably because signing the documents for the release of her remains makes it clear to everyone that Jahi is legally dead. Dolan and his team are probably researching all the consequences of that. Meaning no licensed care facility or licensed physician will be able to do any surgeries without violating the law about abuse of a corpse. It closes many doors and options that the McMath and Dolan group are trying to explore, still.
I fully expect there will be some story as to why the coroner release of remains cannot be signed.
I do not believe they actually have a healthcare facility or physician lined up. I think it's all still a big show.
Dolan has given CHO a huge victory and he might be backing himself into a corner. What was CHO's big dilemma now becomes his. I can see more and more petitions to extend the TRO. Dolan loses a big hand once Jahi leaves CHO under the conditions the mother agreed to.
bbm, This
This will be the moment, if (big if) she signs.