Should i do this or no?

Considering the bunny was something you ere going to give her before you broke up, it would be okay to still give it to her. However, at the same time, you need to respect her decision to end the relationship. Part of being a good friend is to respect their feelings and wishes. It will be hard for you for a while as it sounds like you care for her a lot. The best thing you can do right now, for yourself and for her, is to give her some space and some time. If you decide to give her the bunny, maybe you could send it to her instead of giving it to her in person. This way you can still convey your feelings about her without putting pressure on her in the moment.