Pain relief for compression fractures. Any ideas?

My mom has terribly painful compression fractures of the spine and cannot take anything stronger than acetominophen and lidocaine patches due to her other medical conditions. She has lived with us for a little over a year now and had PT and OT recently after a week long hospital stay. While she is able to do the "drills" the therapists ask her to do, she would like nothing better than to lay in bed the rest of the time. She has dementia, anxiety, and depression as well; we cannot communicate effectively to her that laying down most of the time has created additional pain issues over time. (Before she moved in with us she lived alone for five years,laying down most of the time as well, so there has been a cumulative affect of all this inactivity. Her compression fractures were not diagnosed until she came to live here and saw a new doctor.) The pain doctor she saw a few months ago couldn't believe she managed the pain with only Tylenol, so my question is: could her pain be amplified by depression and anxiety? If we can somehow get treatment for the depression might her pain be more manageable? And if we can get the pain managed better, maybe the depression would be lift a bit. What a vicious circle.

Oddly (to us) she can be distracted from the pain by other activity, like the great grandchildren visiting, so we think boredom may play a role here as well, and we are trying to get her into senior day care, in spite of her opposition to going.

So many thoughts of what we can do to help her be comfortable and get a little enjoyment from her life in the time she has left.

Thank you for any suggestions regarding the pain management and associated depression.