Or any kind of communication even yes-no that is sufficient to recount what happened. It would be an immense wonder if she did given her vast brain damage, but that gets into the whole body-mind philosophical issue and I am very unwilling to state what God can or can't do with even a little piece of brain.
No, she'd need more than that. Otherwise, her lawyer'd have to be very careful to not "lead the witness"----very difficult to do with only "yes" and "no" responses.