Can you use rental income to qualify for a higher amount on a FHA loan?

My husband and I are planning to purchase a home with an FHA loan. My mom will be living with us and I would like to use her rental income to qulaify for more money without putting her on the loan (her credit it bad). In other words, can we rent out a room to her and use her money as rental income and still stay under the guidlines of being owner-occupied?