Stand back and analyze this woman and I think you will come to a good solution. Either she is feeling inferior or insecure about the position, or she is highly confident and assuming many things? imo anyway.

She might not be used to discipling herself to get the job done... she might be used to someone telling her exactly what to do when and nothing more (i.e. her reason to piecemealing her information to you?) OR She might be used to total control and only giving out what she thinks others can fathom. Either way, it appears she hasn't settled into her job description yet, eh?