"the consensus is that it's not hard to or unreasonable to expect a simple 'thank you'"
Yet it should not be hard to sometimes forego the expensive evening out in favour of something more affordable to the entire group.
The more I think about this, it seems the "poor friend" is wronged on more than one account.
- She is not listened to when she asks to meet somewhere less expensive.
- She is not listened to when she lets you know she does not really enjoy it.
- In fact, to see her friends she has to put up with a noisy comedy club, not here scene and not really enjoyable, where she might as well be accompanied by Tom, Dick or Harry, for there is hardly any interaction between the group!
- She is made to feel financially inferior.
- The group is not satisfied that she grovels enough and show enough appreciation after the night out.
So not only does she have no say in where they meet, cannot afford the venue, cannot afford the drinks (not cheap in comedy clubs, I know), has to subject herself to the unpleasant scenario of declining due to costs, only to find that her mates show off their own wealth by subbing her to get her along.
And she puts up with it because she wants to spend time with her friends
Friends, I dare say, who has no real interest in her, looks down on her, and quite possibly like to have her along as it bolsters their own self esteem, as they feel good about their "good deed"? Friends, who rather laugh at some cheap jokes from somebody who believes themselves witty on stage (sometimes they really are), than talking to her her.
I reckon that she does not say "Thank you" or show any appreciation, because she really does not appreciate it. I would not. I would feel so humiliated to constantly have to go through this, with "friends". I rather my friends listen to me, invite me home for pizza and chat, or accept my invitation home for the same, or a trip to a coffee bar or a pub for a chat, rather than pay good money to sit and not interact.
Jakey, the more I think about it, the more I think that your wife is a shallow cow. She lacks empathy, suffers a superiority complex, and is caught in the middle because SHE feels good about showing off what she can afford and you resent the money spent on this cigarette smoking friend who did not do money spinning degree.
You, my friend, come across as a judgmental cow (not a bull, or an oxen, but a cow).