Help us pleaaaeeeesssseeee!!!!?

me and my girlfriend have been together for about two years. i moved to germany for her and have recentley started an apprenticeship. a couple days ago she found this related folder in the trashcan and i told her i didnt do it (i honestly didnt!). then she got all pissed because she has a huge problem with . this isnt the first time a folder has came up in the trash acn and neither of us knew how it happen because neither of us were homeat the time. but naturally she dosent remember that and so i have no proof. weve also asked yahoo if it was possible and have gotten yes and nos. what should i do! ive invested alot of time and money in this relationship and this is looking like a breaker. pllllleeeeaaeee help!!!!