[jll29]

To ask "why are you here?" suggests these people were poorly raised or just plain rude.

Attendees of a funeral make an effort to pay their respects to the deceased and to express their condolences to the family left behind.

[myko]

If I understand correctly I think they and ended up in the line of folks being given condolences as if they were close family.

Sounds extremely awkward and like a plot Michael Scott would get himself wrapped into.

[wbl]

There are much gentler ways to point out the mishap and correct it but a funeral is not likely to have people on their best manners.

[nytesky]

I mean those weren’t the exact words. They were very gracious, but it was clear we had goofed and intruded.