With prosecution having the next round of questioning, and the last word in the trial, I believe ICA MUST take the stand if she wants to get out of 1st degree murder. I know that it would be hard for her to create "reasonable doubt", but without her limited testimony, she can't weaken the prosecutions next round, or last word.
With this defense strategy ineffectively adding doubt, the jurors are likely sitting at 2nd degree murder as a guarantee. The prosecution will be able to take the jury up to the next notch with their clear and concise explanation.
If ICA takes the stand, and Baez effectively limiting the scope, she can add doubts. JB can ask, "Did you murder your daughter?" and "Did you place the duct tape on her mouth?" and sit down. ASA can then ask a limited number of questions that ICA can answer for herself. If JB leaves out all timelines (which he is really good at forgetting), then ICA can do what she used to do best. Convince people (I'm careful to not say LIE). Even Hitler and Dahlmer were at one time convincing speakers.
So, JB limits the scope, JA asks when the tape was placed, and her self defense becomes her best chance of all. No other questions about the kidnapping lies, or the mode of death will come out than ICA can handle on her own.
With her testimony, she gets the best chance she has ever had. Now, someone please explain to JB how to not open the door for a Mack Truck.