@Conleach97,
This is above your pay grade.
She has major problems and needs to concentrate on getting well. She is busy - with that.
She is also (likely) depressed. Depressed people tend to shut down and don't offer much of themselves. It's one of the hallmarks of depression, to isolate yourself from the world, or think the world doesn't need you, or some combination thereof.
Be kind. Be patient. Try not to put demands on her time and energy. She needs to concentrate on getting better, not on whether she's sent you a text or acknowledged a tweet or started an email string.