Heart, sadly it is not unusual to have to wait for rehab. The usual procedure is to get on a waiting list and then report either every day or every week so they know you are still interested and in about a month you get in.
If she's been waiting 30 days, she should be close to getting in. It's a good idea to apply at more than one, some lines move faster than others.
My prayers go out for both of you, I know how hard it is to "wait". I agree with others here that in the meantime meetings would help her a lot.
Hugs