I (38F) am married to my wife, "Viv" (40F). We've been together since our daughter, "Kayla" (14F), was a toddler.

About five months ago, my SIL, "Tina, and her daughter, "Aubrey" (17F), came to stay with us. Tina left her home with Aubrey a short while after her soon-to-be ex-husband served her with divorce papers, and we offered our guest rooms while she got back on her feet.

Things were fine at first, but I started noticing Aubrey getting a little too fixated on Kayla. They grew close quickly, which seemed sweet at first, but then it got kind of intense.

Like she’d always ask where Kayla was going, would get moody if she had plans without her, and kept talking about how “nobody else gets me like she does.” Nothing too dramatic, just little things that added up. Kayla, to her credit, tried to be patient, but you could tell she was starting to feel smothered.

I brought it up to Viv a couple times, like maybe we should give the girls a little breathing room away from each other.

But Viv brushed it off, calling it kids being kids, that it was harmless, and that Aubrey needed her cousin's support with everything going on.

Tina had the same kind of response when I gently mentioned it, just a lot of “They’re just close, that’s not a bad thing.”

Then came the dress. Kayla was invited to her school’s junior prom by one of her friends. We went shopping, she found a beautiful dress that she was so excited about. The dance is next Friday and she’d been counting the days.

Earlier this week, I went to pick Kayla up from her gymnastics practice. Viv was still at work. When we got home, Kayla ran upstairs to her bedroom and came down a few minutes later completely sobbing.

The dress was ruined. Ripped down the side, cut-up lace, and the zipper was completely broken.

I immediately confronted Aubrey and Tina. There was no one else home. Aubrey admitted to it within a minute, and her first words were basically, “Well, she was supposed to stay home with me.” No shame, no apology.

Tina jumped in trying to downplay it, saying that Aubrey just had a moment, and that she didn't mean to ruin the dress.

But then I asked how she didn’t notice her daughter ripping apart a dress in the next room, and Tina slipped, saying she saw Aubrey enter my daughter's room and apparently heard some noises but thought she was just venting.

I told them they needed to pack their stuff and leave. I wasn’t going to let Kayla sleep under the same roof with someone who just destroyed something so personal to her. She cried for almost an hour that night.

Now my FIL and MIL are mad because Tina didn’t have money for a hotel, so they had to cover it. They also don't want things to be awkward when Easter Sunday comes around.

They want me to apologize to Tina for kicking her out instead of handling things more civilly.

Viv initially told me she agrees with my decision to kick them out and that I didn’t need to apologize because what Aubrey did was wrong.

But she keeps saying things like "Maybe we could’ve talked things out first", and that Aubrey was probably just upset in the moment and it was an accident.