My girls are going to a Girls Inc. facility for the summer. Problem is that they close at 5:30...that's when I get off work. So, I have asked another lady here at work that gets off at 5pm to pick them up. She car pools from another town with two other ladies that also have to work until 530pm. So my plan is for her to take my car, pick up my girls and bring them back to my work...in time for her to catch her car pool and me to get off work. She is happy to do it and it won't start until the end of May...I want to pay her something but don't know how much....any suggestions?