I think my friend is ignoring me

So she text me last night asking what I was doing today and I had nothing to do. When she asks that I know she wants to hang out. Anyway, I text her this morning asking her if it would be okay to hang out at her house today if she still wanted to do something. Never got an answer. She saw my story on Instagram but hasn’t text me back. She does this often and it’s super annoying bc she asks if I’m doing anything and I say no, and if plans do arise then I usually let them pass bc I think she wants to hang out. I rearrange my fucking day thinking that she wants to do something when she never even answers my question. And I know I’ll get some bullshit “oh sorry I just saw this” text at an obscure hour of the night tonight or when she gets to school in the morning. We have class together tomorrow and I want to tell her like “hey, I really don’t appreciate you asking these questions when you don’t even reply to me” but I don’t want to seem petty or rude. Part of me doesn’t even want to talk to her tomorrow but that’s a little extra and she’d know I was pissed with her. I’m probably overreacting but this has happened more than once so 🤷‍♀️