What happens when you report someone on OmgYahoo?

Customer Care are the only people that can answer this - and they won't do it here. They've told you that what happens is at their discretion. All you can do is (1) block her, as you have, (2) report her abusive comments and (3) maybe stop commenting in places where the 2 of you interact. Often, the BEST way to stop harment by a cyberbully - is to avoid them completely. You have that as a much clearer and easier option here than any place in the real world.