I'm estimating $50 per hour based on the skills and experience listed. This is a relatively low rate, which might be expected for an entry-level or part-time position. However, without more information on her level of experience or specific industry standards, it's difficult to provide a more accurate estimate. In general, professionals with similar skills and experience in the Baltimore area might charge higher rates, but this individual's limited working proficiency in Swahili and lack of specific industry experience bring the rate down.