I groped and touch my girlfriend when she was asleep but i dont remember doing it, help!?

im 18 n me n my girlfriend r on a break.we went out one night together.we got a taxi home n she fell asleep in the taxi but managed to get into the house(we were both really drunk by the way).she coudnt get up the stairs so i carried her up and put her on my bed,she was literally out cold.i tucked her in and then i got in next to her when she started shaking and looking like she was goin to throw up.i got her a gl of water and she drank it.i hugged her and kissed her. she really scared me because she was shaking so much like she was having a fit i didnt know what to do so i tried to wake her up by sitting her up talking to her pinching her etc etc i seemed to doze off as she was already asleep and seemed ok.the next mornin wen we woke up she sed she remembers me touchin her and tryin to do ual things to her.i denied it because i cant remember due to the drink but shes 100% i did n now shes sayin she dunt fink she can trust me or 4give me ever again.i luv her so much! wot do i do?