Mom is not eating much these days. Any suggestions how to handle?

Hi all for the last few days mom does not want to eat much. She will eat breakfast and have some fruit and take her meds. After that she does not want anything at all no snack and wont eat lunch or dinner...(My mom has always been a good eater even at 95!) I have been through this before, but it just does something to me. I start to think maybe a bladder infection ( she wears depends and that bring up another issue getting her to change them.) I said we got two cases mom we can change them no problem and most of the time she will go for that. I cant get her to go see the doctor or even her day program the month of October she went every Wednesday her only day to go ....I was so happy that she wentand got of the house. We have a very small group of people that we have contact with and I think that has something to do with her moods she can be very mean at times and well ....There is some dementia there and she uses a walker and has a ostomy bag ...I had to learn how to clean and change this had hearing aids and will tune you out if she does not like what you are talking abput lol. I was only going to talk about her not eating but I just kept on typing so I guess I needed to vent. And I did not mention that I wear ALL OF THE HATS. And I am taking a online coure for medical coding and I am half way through the course...I study when she goes to bed. I welcome any commets/ suggestions that any one may have to say about this post. thanks much god bless and have a great evening.....Purplerain :-}