Writing tutor / homework support for rising 8th grader

Hello - 

My daughter would benefit from some writing tutoring and homework support. She is 13 and will be entering 8th grade in the fall. She will work best w/ someone who kindly sets a high bar and who can make the work seem a bit fun and works w/ some sort of reward system (as that motivates her). She needs to work on her academic writing and on staying focused and on-task. We live in Berkeley and are looking for someone to tutor her *in person* not too far from home. 

Recommendations are most welcome.  

Thank you!