Seeking feedback on latest health related issues w/89 year old MIL.

My 89 year old MIL has a myriad of health issues...COPD, A-fib, high/low BP, lung cancer survivor, macular degeneration, hearing loss, anxiety, depression, arthritis, mobility issues. She lost her husband of 68 years in Dec. 2018. My 93 year old FIL had been her caregiver for a number of years, which allowed them to live independently in their home. As a result of my FIL's passing, our family moved quickly to find her an assisted living community. She moved in to her new AL apt. home in early January. The home she shared and most of her belongings were sold in an estate sale. My MIL was agreeable to these steps, knowing it was the best course available. That is not to say that it wasn't difficult. There have been many adjustment pains, but for the most part, my MIL adjusted remarkably well for the first 3 months. Her depression and anxiety increased dramatically within the last month. She began falling (sometimes multiple times per day). She was constantly calling my husband and I, wanting us to come to her apt. at all hours of the day. There were multiple ER trips for labored breathing. We came to realize that it was not COPD related causing the breathing issues, but her anxiety. Medication for both anxiety and depression has been initiated w/in the last month. She was admitted to a wonderful rehab hospital for 2 weeks as her AL facility could not let her continue to stay in her apt. due to her frequent falls. My MIL had to adhere to 3 hrs of therapy daily at the rehab hospital. She did well the first few days and then wanted to do little but sleep. She pretty much told my husband (who has POA) and I one day that she was done. She didn't want to engage in therapy, eat or drink. She just wanted to die (she has voiced this numerous times since her husbands death). The next day, there was no mention of the previous conversation and she had gone to therapy and eaten and drank. She has been confused, but does seem to be improving somewhat mentally. The rehab hospital increased her depression medication. Upon discharge today, she is not at a level to return to her AL community and will be admitted to a skilled nursing facility. We hope this skilled nursing stay will give us some time to figure out our next plan of action. Her current AL community is Level A...we were unaware of the different care levels until recently. We are not sure if she will be able to return to her current AL and if so, for how long? We are required to give 30 days written notice if we move her out. In the meantime, we are paying $3100+ per month for services/housing that she is not receiving. We feel it might be best to move her to another AL community that could provide the additional services following the completion of her skilled nursing stint. Thoughts, suggestion, guidance would be most appreciated.