Oh @Z0rr0, I’m finding all these comments really passive aggressive and I don’t know why. I think it’s because you are doubling down on your position when the comments have shown that there is a tonne of nuance and misunderstanding, and mismatched expectations. Nobody is right or wrong here, and I’m finding your comments really jarring.
As others have said better than I can, there is a broad societal expectation that 17-year-olds are more self-sufficient than your DD seems to be. We can’t mind read, so we don’t know what her friend’s parents were thinking, but I think it’s a logical deduction that they might also have assumed this, and we also don’t know what they said to the friend before they went out. They might have been explicit and said ‘make sure you feed her’. We just don’t know.
And like others have said, some parents feel that offering food to their kids’ guests would be akin to babying them or undermining them. Some don’t feel like that. I don’t think either of those things are unreasonable, I just think that different families have different expectations.
What I do think is unreasonable is being passive aggressive in replies. You have posted in AIBU, a thread with lots of traffic and lots of opinions. When you post on here (and I have), you need to get ready for loads of people to see things differently. Chiming in with weird posts that basically infer ‘well, I guess SOME people don’t have manners’ doesn’t really solve the problem.