Mental illness is a horrible disease that sometimes robs the sufferer of the ability to realize they need help. I didn't see that she was on any medications...she will require these to improve, unfortunately it takes quite a bit of time before they become effective. She needs a psychiatrist...not a therapist because only a psychiatrist can prescribe the medication she needs.
Here's a site that you may want to browse for information...
www.nami.org. There are local chapters in every state.
I'm very sorry....it is awful and I wish the best for her...and her kids.
Take care ~