I'd just rather not have stuff on where someone is leaking stuff intentionally to hurt the other person, especially when it's someone who probably doesn't have the same level of access to lawyers and therapists like a celebrity might have. The last thing you want to see is someone disappear from the internet entirely or hurt themselves because of some pictures.
It's been confirmed that they are not underage photos; she was at least 20 when they were taken (there are tattoos in the photos that she didn't get until after her 20th birthday.) This was confirmed pretty easily by checking Instagram. Sometimes people falsely claim that photos are UA in hopes that people will get scared and not spread them, but it's kinda hard to do when you have tattoos and a big social media presence. Obviously you shouldn't share them anyway because it's revenge porn regardless, but it's not UA.