Some weeks ago I completed the first draft a paper. I then decided to approach one of the experts in the field, who is working at the same school as I. She seemed interested and were willing to read the draft. However I sent her the draft ~ 5 weeks ago, and I have not heard from her since then.

I am now wondering if this is normal? Can I send her an e-mail and ask if she has looked at it yet (or is that considered inappropriate?).

I am getting quite stressed about this, the reason being that my advisor expects a draft of a new paper soon, and it would be valuable to have her comments before I talk to my own supervisor (who knows less about the subject I am writing my paper about).