My friends are cold toward our new friend. Won't tell me why

REALFIREPOWAH - Jan 20 2025 at 21:23
TLDR: Friend joined our social circle 6 months ago. Things were great until a few weeks ago. Friends are now distant and cold toward her, but nobody will explain why.
Relevant background (Names changed just in case and ages if that helps contextualize it.)
I moved across the US 3 years ago for work. After a few months I joined a gaming group that was two married couples. Jason and Dani (M25/F28) both work with me and introduced me to the other couple Kevin and Sasha (M30/F28). A few months after Hannah (F31) joined. Hannah had just started working with Sasha and they became fast friends. We get together at least once a week for board games, food, and bad movies. Best part of my week are these nights. I host. I consider all 5 of them to be my closest friends and my found family on this side of the country.
About 6 months ago Jason and Dani introduced us to Beth (F34). She fit in with the group immediately. Even when we weren't hanging out the group chats were always active and everyone was getting along. Then a few weeks ago Beth played in her first session of Dungeons and Dragons with us. And while I thought it would be fun by the time we started playing the air seemed tense. I'm not sure what happened but that day forward everyone was a lot colder to Beth and I can't figure out why. The day before DND group chat was all memes and talking about being excited to play with Beth's character. Day of and everyone is short with her and a bit short with me as well. I can't explain it but it was all just "off." Short responses, less engagement, and everyone wanted to call it a night over an hour earlier than usual. Just a bad night all around. Felt extra bad for Beth since she came over early to go over her character rules and help make snacks for the table.
I asked everyone the day after what was going on but everyone denied there being an issue. I asked Beth and she said she's as confused as I am. It's been a few weeks since and Beth has stopped hanging out with us though we still talk. She feels like she's done something wrong but nobody will talk to her about it. Dani was the one who knew her first but she's completely iced her out. The couples and Hannah want to get together and hang out but when I mentioned Beth they gave some weak excuse about her not "being a good fit" and wouldn't explain further. They are ok with me now but Beth's still a problem? I don't get it.
Advice
Advice I'm specifically asking for. How can I communicate to the "core group" to try and get them to tell me the real reason she's being iced out? I'm not a good communicator but I'm trying because I know that's important for all interpersonal relationships. I'll try and answer any questions you may have to get to the bottom of this.
You don't have to be a good communicator to ask your group direct to their faces & using basic English what's going on with Beth? The more they deny it, the more likely there's something there - Beth's stopped being involved, she knows she's not welcome.
If they be your good friends, they'll treat you as such; but if they keep stum, then you know there's bugger all respect being shown to you...as with Beth. Of course, if nothing happens, you can also rise above it all even if you do work with one couple.
Hi RealFirePower,
Beth: why in your estimation is it your job to fix this rift, instead of hers?
"They are ok with me now but Beth's still a problem? I don't get it."
Maybe Beth bad-mouthed you behind your back - or someone else in that group when you weren't there to see, or were but didn't pick up on it?
It's her job to have it out with them, and then to tell you (if she wants). Why isn't she?
So why are you feeling responsible for her? Or is it just the Not Knowing aspect? It must be something too personal or sensitive. Or that happened long before you joined them, that they don't want disinterred all over again?
it's obvious to me she did something in appropriate and now is ostracized like animals do the unfit for society. my opinion to make no further attempt to bring her back.
accept that nothing you did or can do will resolve her rift. she's in her place by group consensus and my assumption (impossible to know) is that you're excluded because you'd be seriously hurt by it. they're protecting your feelings. if you want to know tell them you've figured that^ much out and ask they level with you.