I think going over your supervisor's head is a bad strategy in most cases so I would hold off on that. I suspect that the people at the top know that the woman who was supervising you has problems, otherwise they would not have brought in the additional person. It even seems possible to me that her days are numbered. If this is the case, you seem to be in a fairly innocent position. As a newbie, you can't be ultimately be responsible for any problems, which is probably why your supervisor was documenting your questions. She is aware of her own vulnerability and was preparing to try to pass off any problems on to you. I doubt the people above her would buy that strategy. I say ride it out. Do your job as meticulously as possible, keep your eyes and ears open and build alliances.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13