I think it should be fine some people bruise easier than others, if your really worried have her see a doc. My dad used to push on it and massage it, to spread the clotted blood so it would heal faster, it hurt so id just let them stay lol. Cuz one time I was punching this guy on his arm and he punched me back and we kept doing that only I ended up with a *huge* bruise, looked like someone beat me lol. Other than that I dont bruise easy, my sister on the other hand gets big bruises for nothing (you can poke her hard and a bruise will show up next day). I say just let it heal in time. Might take a while though, but it wil go away