Multiple issues. Suggest something.

My mother had got a root canal done a year ago. The cap fixed is not very well aligned because of which she often gets cheek bites. To reduce the pain & burn she gargles regularly with betadine. She's unable to eat even mildly spicy food & neither is she able to bite much. As a result, she's eating only curd rice most often. Also, due to the pandemic, we're scared to take her to a dentist too. Because of this regular diet of curd rice, she's not getting enough nutrition & is feeling tired quite often & gets an upset stomach too. Please suggest a remedy. Her regular medicines include Metalor 25, Neurobion and S-Numlo. All this combined with the current pandemic situation, her morale is often down. Please suggest something.