I’m so very sorry you lost your rabbit. Grieving is a process and it needs its time. There’s no one-size-fits-all for grieving, as I’m sure you do realize, of course. I think it’s ok to cry and be sad for a while, we’d not be who we are if we didn’t feel very sad about losing a beloved pet.
You could light a tea light candle for her in the evenings. Get an electric one, so you don’t accidentally burn your house down. (I have electric tealights now for that reason, that’s why I recommend them).
You could craft some small ornament to put on her grave or for you to wear, like a bracelet or pendant, commemorating her. You could post a picture of her here to let us bunny loving BB members see how beautiful she was.
And also, try to distract yourself. Grief comes in waves and it’s often overwhelming when it hits. Go out and meet people, do sth new that you havent done before. Study, I’m sure you have a lot of studying to do at college, and it can actually be very restful to concentrate on sth that’s fact-based and non-emotional. Keep going even when you dont want to, but also try to have self-patience and self-compassion.
Those are the things I can think of that helped me a little bit when I lost my bun in August.