Mum died 5 years ago when I was 22. Dad moved on and is due to re-marry this year. We all get along now (haven't always), but twice, dad's gf has referred to herself as 'mam' or 'step-mam'.
I find it really uncomfortable and have told my dad about it once. He agreed that it was inappropriate but she's done it again today.
Am I being oversensitive?