I think this situation is a big misunderstanding, I don't think that this girl had any bad intentions and Lana reacted that way, only because she thought that the fan agreed not to share that pic, but then posted it.
I'm more curious about the reason, why she doesn't want these pics to be posted. Because we haven't seen her for about 4 months, there were defo people who met her, and it's possible that she asked them not to share pics/info too.
I dk if it sounds stupid, but the first thing that came to my mind is that she didn't want to show her new hair and wanted to appear on stagecoach with a brand new look (as she did at Coachella). Or mb start trpws rollout, cuz it would defo give more attention to the album, if she debuted with brown hair on the cover.