My advice K.K is always do what is the kind, empathetic thing for the person ! Why rush to wake her up ?
I know we do not wish to see a person back "in" and maybe become embedded, but your friend will show you signs of when she is ready to wake up, nothing is accomplished before that time arrives.
Until then, she needs you as a good, kind, empathetic, loving and supportive, and unconditional friend. She will then value, and trust you so much, that when ready, you can gently guide her to the first Steps on The Road to Freedom.
Do now what is best for HER, she has enough to deal with at present, and no need for anything that may make life harder for her in any way.