First time posting and a bit of a long one sorry . . .
My partner has a seven year old lb from a previous relationship. Long story short she is a pants mother and see's him as pound signs and a way to get attention. She doesn't care for him properly either. Unfortunately it isn't bad enough for us to have him taken off her (that is a different rant all together). Any way I have twin boys who are coming up a year old. I found Twin 1 to have bloody nits two weeks ago so treated him and searched twin 2's hair too. He was clear . . . Both of us adults were clear too. I put it down to older brother as these things are easily picked up at school. This past weekend I picked him up to notice he had had a hair cut (only had one 3 weeks before so wasn't due) so I made a comment to his mother saying oh you've had another hair cut and left it at that. Today I've noticed twin 2 has nits now and they are very small. Only place they could have come from is older brother at the weekend. When I tried to check his hair at the weekend he kept brushing me off and saying I don't have anything in my hair. It's clear. Which I thought was a little off.
I've just message my partner to stay all four of us are being treated tonight so that we are clear and older brother is getting it at the weekend. If he refuses he goes home until it is done.
My partner refuses to believe that it could be the eldest even though he knows he often goes all week without a bath etc. For some reason he won't see any bad said about lb or lb's mother even though she stopped him from seeing him for four years.
Am I in the wrong to want him treated too?
I feel like I am constantly fighting a battle with a seven year old over who makes the rules in the house and battling with his mother over who parents my kids (my partner doesn't want me disciplining the seven year old in case he tells his mother). I have a feeling something has gone on recently that I am not aware of as this has been worse since she split with her husband in October (they are now back together yet again) . . .
Please help . . .
And any tips to keep nits away as I feel this will happen again and again and yet somehow I'm the one getting blamed for it happening