Hiring a babysitter

With all my work and household chores, I am seriously thinking of hiring a babysitter to take care of my daughter. My husband thinks I am crazy but I really need help. It is hard for me to take care of my freelance business, household chores and taking care of my daughter at the same time everyday. I am thinking of hiring a babysitter for maybe one day a week. My neighbor's daughter (12 years old) is already interested in watching my daughter but I do not know how much to pay. If I hire her, I will be paying her based on hours. Can anyone tell me how much I should pay for the babysitting service? I would like to hear about other peoples opinions and experiences. Thank you!