My girlfriend is hiding her stories from me??

I figured my girlfriend has been hiding her stories from me. I found this out because her highlights is not showing, and if she reposts my stories or if she posts a story of me, it reappears. I’ve been meaning to ask her about this for about 1-2 weeks now but I’m trying not to because its finals week and I dont want to add stress to her (if this gets into a fight).

I mean her profile picture is me, so it shows she has a girlfriend. But i just want to know why…

Can you keep me guys sane please give me reasons why she hides it, good or bad reasons why? I’m planning to ask this in a few days after her finals