What does it mean if a girl accepts your friend request at 4am?

There's this girl I like and I've been trying to put myself out there for her. I complimented her at a party, danced with her a few minutes afterwards for one song, then left her alone the rest of the night so she wouldn't think I'm just sticking to her. I didn't send her a friend request on Instagram for months afterwards (it was summer) and then a volunteering opportunity came up at school where she had signed up for a specific shift and I signed up to be her partner then. Nothing happened that time except that we officially met. I sent her a friend request that evening to show her that I remember her from the party and she doesn't accept until almost 3 weeks later on a Saturday night at 4am. Could this mean anything? I'm a girl by the way 🫣
What does it mean if a girl accepts your friend request at 4am?
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