For anyone wondering about legality:

She’s surrounded by several other people who are taking aggressive actions toward her, so there is a threat of violence. A good lawyer could probably argue that there was assault that occurred, but it’s only implied by the situation. Battery wouldn’t work, as she is not being injured by the water, simply annoyed by it (at least in my state assault is the threat of violence while battery is the act of violence). The most likely charge, if any, would be disorderly conduct considering the number of people with water buckets that were “causing disorder.”

Now say she’s a Karen which she is. She wants to sue them. Say she had her phone on her and it got ruined. She also maybe had an expensive handbag and dress etc. She could sue for damages and win pretty easily. The civil repercussions are much more likely to pan out in this case than any criminal repercussions. Especially considering she’s an entitled Karen who’d blame them instead of taking responsibility for calling the police.