My wife doesn't like visiting my family often, is she sinning this makes my mother angry

In my family we have lots of gathering and social events with cousins and everyone, my wife says she likes to keep a good distant relationship and meet from time to time not every day but my mother wants her to meet and mingle in the family with family members, my wife is also very shy and she pleases me everyway possible but she just doesnt like going and meeting my mother often, this makes my mother really upset and sad and she went through alot so what do i do? My mother often fights with me regarding my wife and i get stuck in between, my wife is loved by everyone in my family and they often invite her to their house to meet their kids and their family but my wife likes to be indoors ( she always prefers being at home ) Can I force her? Can she refuse always? is she on the right? am i sinning?