I think this is going to be a real eye opener for you but it’s what you need. I see a few big problems

She broke up with someone she’s dated for a year a few months ago and is not ready to date right now.

Excuse

Her school and work schedule is hectic and so is my work schedule.

Excuse 2

There’s your answer. She’s not interested in dating you. Otherwise none of these would be preventing her from dating you

I can’t really blame her either. You spent a year knowing her? You’re in her friendzone

Best thing is if she gave you those answers, I’d move on from her. Why? Because while you wait around for her to be “available”, she dates someone else a week later