Nc'ed as potentially outing.
Looking for some advice to put this into perspective. Lovely childhood but in a nutshell, my mum blatantly prefers my sister to me and it's starting to upset me. I love my sister and we get on well but she quite obviously plays on this. She has laughed in my face and hugged my mum in front of me when I think my mum said she was the favourite. If there is anything wrong with any of her children she likes to make sure my mum knows about it - this is for things that I wouldn't bother mum with as I know she worries e.g. one of the kids having a tantrum before school or being off school as they're unwell (even pre-Covid). My sister and I both had a DC off school a few weeks ago and after initial enquiries about my DC, she was only enquiring about my niece (even though the situations were very similar).
I suppose I'm jealous? It was a shock to realise this and I only did in my thirties to be honest.
I see it myself with my own DC that I naturally get on better with one over the other and it's no-one's fault but I try my damnest to treat them the same. My mum and sister are naturally alike whereas I'm quite different to her so I don't think she can relate to me. I guess this is why. They have told me on a few occasions that they have been slagging me off when I'm not there, but that it was a joke and I shouldn't take it seriously. But I do and it hurts.
It's got to the point where my DC ask me why their cousins see their grandparents more often than they do even though we both lives hundreds of miles away. I make so much effort but it often feels reluctant on my mum's part.
Any advice on how to deal with this?