What would you do?

So I teach at an after school program and we have a strict policy against staff posting and taking pictures of our students on staff’s personal social media—mainly because it’s a safety issue (some of the parents have restraining orders against the parents, etc and if a child’s photo is posted the other parent, etc can locate the kid). A couple of weeks ago, a TA wanted to Snapchat one of the kids but I told her she couldn’t do that as it’s against our policy. Low and behold, I’m on her Snapchat today and she has Snaps of the kids.

I’m technically her supervisor but not direct supervisor as she’s not my TA. My question is would you bring this up to management or would you pull her aside and remind her again about the policy?

I’m not for getting any of my coworkers into “trouble” but management doesn’t play when it comes around to breaking the social media policy.