Did i lose her forever, or is it just a bump in yhe road.?

To be honest: You seem like you've tried your best. Maybe something is going on in her life and that is why she isn't responding to anything. I know it hurts but your choices- as far as I see it- is to keep trying more (maybe go to her house? Talk to parents? Talk to her friends?) or to let her go. Everything will work out for the better eventually though.