Answer:
next time they start, just tell them "shut up or i will tell everyone you know that you used to cut and so did i, except 'I' have tried to stop while starting to act less childish and more grown up" and then they will have nothing to tease you about.
and if they do continue, then you did warn them you would, so go ahead and tell everyone they know that they used to cut.
and you have no shame in telling everyone that you used to cut, because you are trying to stop, which takes more guts to do than continuing with the cutting.
who cares what people say, they sound like idiots anyway.
They sound like cruel, insensitive girls. Sometimes life can be very painful, but don't take it out on yourself. Talk to someone who can help you with your problems and don't listen to these girls who are so hateful and self-centered.
They only talk about you because of their insecurities.
Don't make their problem your problem. You have grown up and they are still acting like kids. A high school junior is not a child anymore, she's a young woman. Rise above their childish game. You already know what you have overcome. This trash-talk is NOTHING compared to what you have already handled successfully. Move forward.
tell them to stfu
tell them their fing hypocrites
and tell them to go **** themselves