I.M.
Laura,
There is a lot going on here. How does she acts with your husband other than avoiding eye contact? Is she okay with him holding her? Is she okay with her being alone with him? You need to check these things out. The fact that he is the father it doesn't mean that he is able to take care of her for an entire week. Had you done this before? I know that at that age every little change to them is huge! Listen, she was missing you and you weren't there, point blank is that a father is not the same as a mother. No matter how good your husband might be he doesn't have motherly instincts and he doesn't comfort her like you do. So, you were gone and she was left without you for a long time (in her sight).
I would suggest, that if you can take a day off (or maybe two) in a week and see if you can spend some quality time with her and get her to forgive you for leaving her for so long. If you can't then maybe take 1/2 a day off from work and go pick her up early from daycare and do something with her.
I hope this helps.
I.