Assisted living price gouging?

Assisted living wants to increase family member care charges by $1600 per month. Current care level 45 hours a month (~90 minutes a day), new level will be 90 hours a month (~3 hours per day). But nothing has changed with her health or care needs. Facility states they did some "audits" and previous staff was not billing correctly (not my fault). I feel stuck, she needs to be there, but no way is she is actually getting the 3 hours a day of care time they want to charge her for. Can I negotiate this or fight back? What do I say? She is private pay, spending down her money to eventually go on Medicaid. Trying to make her money last as long as possible.