Staying out of it

[JaceLancs]

I’m pretty sure my DDs FIL is having an affair
DDs MIL has a lot on her plate - serious health issues which her DH is quite unsupportive of
I don’t know her well enough to broach the subject but do I give DD a heads up? She could then share or not with her DH
It’s potentially very messy
I inadvertently saw a very explicit text but since then have had my suspicions confirmed by a 3rd party

Aw that's shit. But you can't unknow what you know unfortunately. This could all backfire horribly and become your fault. But 7f you trust your DD to handle this carefully, then tell her. It would be a lot easier to pretend you know nothing. But I don't believe in enabling people who are destroying the lives of their lives ones without them knowing.

Proceed with the greatest of care OP.

This is your DD's family.

She may not want to know.

Neither may her MIL.

MIL may know and won't appreciate you sticking your oar in.

Be so careful.

This has clusterfxxk written all over it.