After you file

Is that for reverse mortgages too? We have a 1098 that says the MIP accrued is $1094.51 can I deduct that?  My mother has a reverse mortgage and we got a 1098 for 2019 I’ve never seen a statement like this before do I do anything about it or just keep it ? Do I file anything? The 1098 says annual escrow and interest statement . she still alive and she still living in the house. Also We already filed her tax return but can I do an amendment to get the deduction for the MIP?  Thank you