Let me ask you this. If the *FATHER* put that stuff on his daughter's grave, would it still be "littering"? Would the city object to it?
That’s a good question. The owner of the graveyard might have something to say about it too. You can’t just put “anything” on a site, even if you own the site.
I’m quite touchy about something done here in central Kentucky that I never saw in Washington state. To wit, putting a memorial on the side of the road where someone died. Some of these are amazingly ornate. Further, we’ve lived here for 11 years and many of them are the same ones that were up when we moved here.
I think they are inappropriate. That is what gravesites are for. But I’d compromise with a “six month memorial” rule, eventually reduced to 90 days, and eventually not at all. It’s a good thing they don’t put one up for every person that dies in a hospital. There would be no room for beds. It would also be kinda creepy.