How do you manage/navigate rage in individuals with dementia?

Currently, my mother is in SNF. Prior to moving her into LTC, she was in assisted living for close to six years. She has a host of chronic health conditions. My family and I decided to move her into LTC after several repeated falls with the last fall producing seizures. Since being on the seizure medications, certain personality features have been magnified, such as her rage and anger. I received a call this afternoon from the charge nurse stating that they placed my mother on suicide watch because she has been repeatedly stating that she wants to die. In truth, she has been saying this since last May when things don't happen fast enough or doesn't get what she wants. For example, because the housekeeper changed the position of her bed, she now wants to die. Because of her rage, she's also attempting to run people over in her wheelchair and has hit several of the staff. She also takes her rage and anger out on me and my partner when we visit. The repeated exposure to her anger and rage has made it challenging for me to visit her. Most of her anger and rage at me is related to her being placed in a SNF - wants to go back to her assisted-living facility. Because of her conditions, she cannot take SSRIs or SSNRIs because of low sodium. She also can't take antipsychotics because of afib. Our last resort has been xanax, which she has been on for several years, but neurology prefers for her not take scheduled doses of the medication. Her doctors have also recommended memory care, which I have called a few facilities - ones that take Medicaid. Unfortunately, there are waitlists. Other memory care facilities are cost prohibitive even if she still was private paying. So, until a space opens up, we can't move her into memory care. I'm afraid that the facility will kick her out because she is the "problem" resident. What other things can we do to help manage/navigate her rage and anger? She wants a phone, but she often calls emergency services when she doesn't get what she wants or things don't happen fast enough. So, no phone at the moment. She likes to watch certain television channels but she hasn't been interested in watching TV since moving into SNF. They do have activities at the facility, which she often participates in, but it doesn't seem to be enough or not enough for her. She doesn't like puzzles. We try to show her pictures because she likes pictures, but this only entertains her for about five minutes. She likes music, but she hasn't been that interested in listening to music. Instead, she wants to rage. Finally, prior to her last fall, we did utilize hospice services because her psychiatrist recommended this. The assisted-living facility was short of staff. The facility was having a hard time supporting her. Unfortunately, hospice didn't work out.