When has enough time ped?

If she said she doesn't want any contact you should probably just take her at her word. You don't want her putting a restraining order on you because you won't leave her alone. You never know, it might be hard for her to maintain a friendship with you since you had such a long lasting relationship. If I were you I would just move on with my life because there will be plenty of more people for you to have friendships with.