So I provide a treatment service, too outing to say exactly what it is. One of my friends has asked me to treat her and I am very happy to do so. She is having the treatment next week, but my dilema is whether or not I charge her? I don't want her to feel awkward by asking her for money, and I also don't want her to feel bad if she wants to pay me and I let her have the serivce for free. I thought about half price if she asks to pay, but how would you feel. She is a fairly close friend.