Is this romantic or creepy?

So my girlfriend of a couple months got a really upset at me for something pretty stupid. I've apologized and owned up for everything even if I think that she's making a mountain out of nothing, but I haven't gotten a chance to really talk to her about it. She says she wants to move on and not really think about it, but I can it still bothers her. I feel like if left unfinished she might hold onto it in her subconscious and it would make problems later. I don't want to bother her into talking about if she's made up her might that she doesn't want to, so I was trying to think of an alternative way of allowing to forgive me. I was wondering if doing something like leaving a flower and a apologetic love letter at her doorstep would come off as a sweet romantic way for her to forgive me and be completely over with it or if it would come off as creepy/obsessive/persistent. And if the later, any other ideas to reach my goal? Or do you think I should just leave it alone all together?