How can I get someone in assisted living?

I told doctor my Mother in Law needs to be in Asst. living. Due to not taking care of herself, Meds in fact Sept of 2016 almost had stroke due to not enough med. Just not going to doctor when she needs to. Just this UTI was so bad talking out of mind. Then husband I found she has be sending huge amounts of money to brother. That is why she does not have money for med or enough food for month. Told doctor of this while in hospital ask if we could get in asst. living. He told her what are plans where did not end well with my husband and her. She transported by ambulance we don't want to pick her up due to the fact she can no longer take care of her self.