She's so pretty!
I would let her settle in and try feeding her tomorrow. With her weight small rats (60-ish grams) should be good once a week. If you try feeding her a big meal right away it could stress her system. You'll soon be able to bump up the size though and get her up to a healthy body condition.
As far as her rubbing, could she still have a small piece of stuck shed on her face? Maybe around a heat pit?
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