DH and I have been together 15 years and married for 13. I have always called his mum by her Christian name, never expected to call her anything else to be honest.
Now all of a sudden she has decided she wants me to call her mum because her friends DIL does. I don't want to a) because it would be weird after all this time and b) she's not my mum.
I have always had a pretty good (if sometimes tricky in the past) relationship with her which I really do make an effort with and we rub along quite nicely now. Or so I thought. Now she's refusing to speak to me unless I agree to call her mum. DH has told her not to be daft but she's insistent that since my SIL has agreed then I should too.
I'm 50. I do not want to call this woman mum and think the whole thing is ridiculous.