So, my Dad (56) is married to a younger woman (37), and they recently had a new baby. I (19M) get on really well with both of them.
My dad works a lot, and already has 4 kids including me besides this newborn, so is fairly busy. I went to stay with my Dad for a week or so, at the same time my Grandma (Dad's mum) was staying. I noticed tensions were growing high, my step-mum was getting very defensive over the baby, which I can understand because of hormones and whatnot. My grandma was kinda trying to educate my step-mum on how to look after the baby, which I think annoyed her. My dad was super busy with work, and so was struggling to help contribute. I was doing my bit, but even I got shouted at by step-mum at one point for playing guitar too loudly when I didn't realise the baby was sleeping.
One day, big argument between the three of them. Stepmum had had enough of Grandma educating her, and shouted at her. Dad was upset by this and shouted at stepmum sayings shes overprotective. I found this unfair, so I stepped in and told them to be considerate, but was dismissed. I think the age gap may be contributing to this aswell, seeing as this is her first kid but not my dad's first.
My grandma took me aside and slagged off step-mum. Said she was being a drama queen and wanted all the attention on her. My grandma made it out as if it was much harder for my dad then my step-mum, and that I needed to support my dad more with him working and stuff.
I'm really torn, as I can kinda see both sides. Is my stepmum being too protective and being dramatic? Or is it the other way round? AITA?