Urgent - please help

Basically I can’t help but feel my best friend doesn’t value our friendship anyone since we joined sixth form. I message her and she honestly takes like a good 3-5 hours to even open my message yet I know that she’s seen the notification because she’s been messaging over people. I once sent her a text like some time last week and she replied a whole week later! She claimed she didn’t see it but how could she not when she’s been on her phone?
Is it time I just maybe steer away from the friendship? Because I’ve honestly had enough tbh


Please send in your advice and thoughts on the situation .

Positivity only 💗