Hello, My FMIL lives in a former British colony so my Fiancé calls her mumsie in fact so does all of his friends/family. I do not think it is disrespectful commons sense says she is not my mom. We are not of the same culture. My mom asked me what did I plan on calling her I said mumsie. My mom went crazy and gave me a lecture about my dads mom said to call her mom and my mom replied I have a mother and will not do such thing. My mom’s mom was pound of my mom. I think it is stupid. My mom and my FMIL will never be in the same state really how it is disrespectful to my mom to call my FMIL mumsie or mum. My mom said I do not understand because I do not have children. I tried explaining to her I will be the only person not calling her mumsie even the neighbor calls her mumsie. Your thoughts…