My Mother has dementia which cntinues to worsen. I have her...

My Mother has dementia which continues to worsen. I have her living with me because I've found that centers that treat patients are sub-par. My biggest question is that, since there is someone with her 24/7, I want to know why she can not be given stronger pain meds? Her confusion, repetitive questions/statements and her fragility I think I can handle. But what can we do about her pain?