Margypops couldn't have said it any better above ....
Please keep us posted on how things are going ...
C~
She is taking a lot of meds and I agree its possibly that causing tinnitus , must be distressing for her , I think asking her PCP may be what you can do she shouldnt have to live in discomfort .many meds do have side effects It sounds like you care for her at home , its good she has you, I hope you can get some answers. good luck.