it's also in part due to her graduating college. I've found many girls who were once really active on tiktok eventually become inactive or barely post after they graduate, more than likely because they have to actually work a 9 to 5 instead of getting lit every other day. no more tailgating football games, no more making random dance tiktoks with roommates/friends because they're taking a break from studying, no more random college events and parties they can dress up for and show off their outfits, no more sorority events, no more being super drunk and recording and posting themselves making out with their friends (I've seen that happen a few times) and so on.
It's really odd how it happens considering that everyone, especially girls from their late teens to at least mid 20s are constantly on their phones but somehow almost all slowly drop their social media presence after college. Hell, I've even followed a few girls who seem to have deleted their accounts because they went into respected professions like working as a real estate agent or at an accounting firm, likely because they don't want old videos of them wearing dental floss bikinis, shaking ass, wearing basically stripper levels of revealing halloween costumes, lip syncing to songs about freaky sex, and so on floating around where their future employers/co workers/clients can see.