My family is going to be helping us with our wedding but my fiance's mother refuses to because she "does not believe in marriage", she has never been married but has 4 kids and lives with her youngest's father and has for almost 10 years. She always makes snide comments to me about our wedding and other things (I "made my dessert with dog biscuits" that everyone ate but her, "nobody is going to come to our wedding" because its 2 hours from her hometown etc)
The most recent was a voicemail left asking for our address so she can send us HER save the date (she is not getting married and we recently sent out ours) when all she was sending was an unrelated letter to my fiance....I think she is trying to get under my skin on purpose. The only thing I can assume is that she thinks i'm taking her son away from her (although I am not, we always visit them when we're in town and they speak frequently). He moved with me 2 hours away to attend college and we have been here since but it was his own choice, I never forced him. Her and I had a great relationship before we moved. What should I do?