Mixed feelings. The writing is terrific; mind-controlled Jill is my current favorite topic and I think you've captured the spirit of her ordeal very well. On the other hand, there are the things the other reviewers mentioned the fact that her eyes have always been blue and the fact that Jill's RE5 file states that her blonde hair comes from pigmentation loss due to the cryo sleep. I feel like "Comic Book Guy" from the Simpsons complaining about things like that, but it pulls me out of the story.

Ultimately, though, good writing wins I look forward to your future endeavors)

I like the use of words in this fic, you've written some nicely flowing sentences here.
Only, a couple of things, Jill always had brown hair and blue eyes anyway, and Wesker didn't turn her blonde, but it was a lack of pigmentation when she was being tested on in the research facility. If this is meant to be more AU, though, then it works well)

umm... jill has blue eyes since the first RE1, remember the remake her eyes there where blue, in RE3: Nemesis even if it has bad graphics we could see that she had blue should look for images
And about her hair yeah she was a brunnette it s in the only thing you re right)