My baby is nearing to 5 months but she has not been able to roll or take interest in mirror.

It’s normal! My baby was not interested to roll or do tummy time when he was 5 months old +. However, I just keep encouraging him to try. Now he is 8 months old, he has no issue in rolling and lifting his head. Every babies are different! Give her some time and she will be able to do it one day! If you are worried, you can flag out to your PD during the development check up!

How about interest in mirror? I had asked around but no one seems to have this issue :(