*There is so much wrong with this, but I’ll single out the fact that you are sneering at this poor woman for holding her knife like a pen (‘HKLP’),, thus according to you betraying her non-U origins, whilst in the next breath you use the phrase “out for a meal”! What would Nancy Mitford say? I’ll tell you: “meal is for chickens”. Judge not, etc.
Why would you deliberately choose to cause your father in law embarrassment?
He couldn't admit there was no WAY he was paying for the posh option... I actually thought I might have broken him, I really did, the squirming was intense!
So you thought it was funny to make a man in his seventies, your father in law, ‘squirm’ by trying to shame him into booking a restaurant more expensive than he could afford? If he wanted to behave in a certain way around his ‘lady friend’, why not just respect his wishes? Why did you need to torment him, and find reasons to sneer at her? Getting a bit above themselves, were they?*
I knew that one would get you.
You've assumed rather a lot there dear, OH's DF (not my FIL we aren't married, terribly non-u I know..) is significantly better off than I or OH, he just doesn't believe in spending it in restaurants, he would rather spend it on guitars and model trains (And it is his money so he can do what he damn well likes with it.)
We actually have a pretty good relationship, he rings to talk to ME if he's worried about stuff, because he knows I'll give him a straight answer. In fact it is such a good relationship, guess who it was he asked if he should actually ask LF out, and was it ok if he had a relationship with her 2 years after the death of OH's DM... mm! Me.
I think judging his LF on HKLP is no worse than her judging me (erroneously!) for choosing an american style burger diner (particularly given she has NO idea I'm strapping on my judgey pants for her cutlery usage, whereas she left me in no doubt whatsoever of her judgement of me.)
Ultimately, I don't give a flying fuck whether I particularly like his girlfriend or not, he likes her, it works for them, they are happy, hurrah.
He gets a bit of gentle pisstaking from time to time, I tolerate him wittering and telling me 'well thats nice but im not interested in talking about that sorry' when I tell him what I'm up to (if it ain't trains or music, forget it!).
It might be a surprise to you... but you can't actually judge a relationship based on a single post, there's far more complexity and context you just can't be aware of.