When I was hired at one of my jobs, (teaching piano lessons) I was told I would make so much per hour until January- when my boss said she would pay me an extra $2/hour.

So far, she hasn't said anything to the effect of "make sure you add another dollar per lesson." I add up all of my lessons and just give her an amount at the end of the month and she writes me a check.

I obviously want to make more, especially since she said she would pay it to me...but how do I approach this subject with her? Should I email her about it, talk to her in person (most likely over the phone since we don't get much time to talk in the studio) or simply add up my monthly wages with the new wage?

Help! I want get this raise, but I'm unsure how to approach it!