Hello feminists. I'm looking for a bit of help on a family issue that is troubling me, if you would be so kind.
Background - I have a younger SIL who is a slightly odd person (I think she is borderline SN). She is very passive and often gives the impression that she doesn't actually make decisions based on thinking about what she actually wants - she just sort of goes with the flow.
SIL is getting married this year to her boyfriend. They have been together for about 4 years.
Boyfriend (to be known as BF from here on) is pretty odd himself. He comes across as an odd mixture of deeply insecure and kind of smug and pleased with himself. (Can you tell I don't like him?!).
Anyway here are the things he does to SIL that make me uncomfortable with their relationship;
Very quickly after they started living together he changed job and found another one at the other end of the country. He openly said that he thought SIL needed to move away from her mother as she is too dependant on her. This move means that SIL is now an 8 hour car drive from all her friends and family. (SIL was dependant on her mother but I think the reason for this is her borderline SN behaviour.)
BF is very very overweight - he comments on what (very slim) SIL eats and makes 'jokey' "are you sure you should be having that darling" type comments when she takes a second helping/has dessert.
BF tends to order SIL about, rather than get up and get something himself he asks her to go and get it. (This may be linked to his weight but it is pretty sad to see in a young couple in their 20s).
He gets very irritated with SIL over things like how to work their camera/set the satnav/whatever. He loves electronic gadgets and likes to patronise her about them. He likes to make comments along the lines of "how many times have I told you how to do blah blah blah" - this will be said in a pained patronising way, usually about some gadgety technical aspect of some gadget that SIL couldn't give a shit about.
We went to visit them recently and stayed for a weekend. He shouted at SIL for cutting an onion in the wrong way and banged his fist down hard on the kitchen counter. (He was careful to do this when my DH was out of the flat). He asked me at one point if I knew "how to get my own way all the time" and then said "like this" whilst twisting SIL's arm up her back and pinching her (I don't think he was actually hurting her). He did this as though it was a joke.
Later on we were sitting in the living room having dessert and when he finished he held his bowl out for SIL to put down on the table - he didn't look at her or ask her if she could do it, he just held the bowl out (he was watching TV). She wordlessly got out of her chair and put his bowl on the table even though HE was closer to the table than she was.
They are getting married this year and we were told the other day who the witnesses are to be. (We are in France where normally the bride and groom have two witnesses each). SIL doesn't really have any very close girlfriends and it seemed pretty obvious to me that she would have her brother (my DH, her only sibling) as one of her witnesses, they are quite close. It is very common in France to have one's sibling as a witness.
Anyway, BF announced that they are not having any family members as it would cause too much upset in his (very large) family. SIL's witnesses are to be a couple - long term friends of his that SIL only knows through him. None of us have ever met them or even heard very much about them. Basically he has chosen all 4 of the witnesses.
There is other stuff but I think you get the gist. They are in their 20s, he is about 5 years older than her.
I'm deeply uncomfortable with the situation although can't do anything about it really.
Thanks for any feedback.