I (22M) think my wife’s (23F) family may have traumatized her at her Bachelorette party.

(TLDR I think my in-laws traumatized my wife at here Bachelorette party but I am confused on how to ask and scared to ask)

Like I said in the title I think my in-laws traumatized my wife at her Bachelorette party. We have been married for over a year and I still don't know what happened.

Background: My wife and I grew up in a culture where we didn't talk about sex much. (My wife's family is more open about the topic.)

What I know:

My wife says she doesn't remember most of it

Her sisters are the ones that planed and executed the party

My father-in-law says there was too much information (i did not ask him this is what my wife told me)

One of the games was a challenge to see who could deep throat a banana the furthest (i assume most of the games were simmilar)

After the party she began treating me differently.

We have been married for about a year and a half and we have barely had six in that time. (I feel it has something to do with this event, I may be rong though.)

What I'm wondering is how do I even approach this? Should I ask her for more details? Should I ask her family what happened? I am just confused and need advice