No I would never charge a close friend for anything professional, and never have. I have written poems, songs, and lyrics for parodies, and spent much time and effort on this; but it is my pleasure to help a friend. At one point in my life I was an editor and now I edit papers for family and friends. If a “fremdeh” would ask for the same services, I would charge. I worked side by side with my friend to help her set up when she opened a store, and wanted no pay. You don’t take money from the people who are closest to you, IMO.
OTOH, if what they need will cause a great tirchah or financial loss to you, you might want to re-evaluate.