Would you be pissed?

Okay so last night SO and I decide to take his family, as sort of an Olive Branch to the movies. Long story. We figured it would be a good idea to get the family together and to not have to talk. Lol. I don't get along very well with his "mother".
Anyhow, we took his mother, aunt, her daughter, his little brother and ourselves to the movies.
We spent over $70 for the tickets themselves.
Well, we get in and during the movie, there was a group of people in front of us so loud and obnoxious it was ridiculous. Like, we literally couldn't hear the movie. They up and down, very distracting and rude. Made the movie miserable. After our attempts to quiet the group were failed, SO says we should leave the theater.
We meet out and the lobby and complain to the staff, who were also no help.
SO's mother says she's going to see what she can do.
She leaves, and ten minutes later she said, "All they offered to do were to give us refund tickets, for any movie to use whenever we want." She had 6 of them.
So, I'm thinking cool, we can go do something for a little bit, come back and choose a different movie tonight, or we can just postpone it until tomorrow.
EXCEPT, SO's mother didn't give the tickets back to us, or even redistribute them to the rest of us, SHE KEPT THEM AND PUT THEM IN HER PURSE.
Excuse me? WE payed for them.
When SO said something, she says, "Oh well, I'm the one who got them back, didn't I?"
So, SO and her got into it in the middle of the lobby because she refused to give them back.
She ended up leaving with her sister and her daughter and his brother.... WITH the tickets.
SERIOUSLY? I'm beyond pissed.
We payed around $70 for them because going to the movies is expensive, and with an infant and the holiday's coming up, we certainly couldn't afford to just drop $70 off to his mother like that. We wanted it to be a fun, family night.
His mother is saying stuff like, if you couldn't afford it, why'd you take us at all? Well, because we thought we'd enjoy the movie, not just give you $70 worth of movie tickets and we sure didn't anticipate not even sitting through the movie.
Would you be mad?
What would you do?
I'm pretty pissed. I feel like we just wasted that money..

I would be pretty upset. That's so smurffy and selfish of her to do that.

I would be extremely pissed.

I would be livid. Why is she being so rude and ungrateful jeez!

I mean, I thought she'd be decent enough to give them to us because we bought them.

I would be livid.
Honestly I would have taken her Purse and got them out My damn.self.

Ya, and I would not be talking to her for a long time.

That was bitch move to do no matter if you could afford it or not. She didnt pay for them regardless so they aren't hers.

Yes! That is absolutely ridiculous of her to do. Shame on her.

Yes, I would be pissed.'
No, I would not make a deal about it, and call it a lesson learned.
Yes, I know its easier said than done, I also have a hard to deal with person in my family.

I would be livid.

I'd be pissed, so SO pissed. I would probably never interact with her again.

Hell yea I'd be pissed! That's so rude of her!

I would be beyond upset. That was just rude.

Oh fuc k that. She needs to give the tickets back OR the money. If she doesnt, let her know you'll be contacting the cops. You won't actually need to because she wont want to get into all that but it should scare her into doing the right thing. What a massive smurf >.<