Sending a bereavement card to someone you haven't seen for years

I think it's a lovely idea, and nothing inappropriate about it. I think it's expected that long forgotten people get in touch when they find out about someone they knew well died. I've just recently done it myself, and there were no hard feelings from their relatives . In fact, they appreciated that I remembered their loved one.

Yes, send the card. It can do no harm and may give them comfort that you remembered the time you had with them.

I would send a message.I am sure they will appreciate a kind message.It shows you are thinking about them.
Barbarax

I think GrannyIvy has been outvoted.
I too would send a card, from my own experience it will be appreciated.

Too many years gone by if you never kept any contact why bother 🤷‍♀️ Sorry over 30, years ago since last contact ….

Yes, I would too.

Yes I would too. You obviously loved him once, it would be a lovely gesture

Yes - wearing the boot on the other foot, I think your ex-boyfriend would appreciate the gesture,

I think that would be kind. You only get one chance at this sort of thing.

Yes do it. Is a really nice gesture. Am sure the brother will appreciate that you remembered her.
xx

Yes - that’s very kind of you and I’m sure it will be appreciated.

Yes. An absolutely kind gesture. We had loads of cards from people from years gone by, for dad. I think your ex will be pleased that you remembered his sister with fondness.

Yes, I'd do that.

It doesnt seem you'd be overstepping the mark at all.

I would …..