New info: Wife objects because of bad actual swinging experiences with bad ex

So... new info. Turns out the wife is against swinging because her last marriage was an OPEN RELATIONSHIP which of course was mainly her crummy two bit criminal ex fucking girls they had threesomes with after she fell asleep (and I’d guess totally without her). They were always on E and Charlie and no rules were observed. She has a poor opinion of swingers and thinks the healthy ones I’ve met online are putting up a happy front and you can’t read their body language ... I said we should meet some in person. She didn’t recoil from the suggestion. Also suggested we take BDSM classes as she’s very comfortable with BDSM and any non swinging kink...

anyone have thoughts? I don’t think her objections are rooted in the lifestyle I’m proposing— but in her time with an abusive ex.