Well I would tell them that You need to charge for the Thread used and you charge by the whole spool and for each color and for set up time for the pattern so if the Spool is $5 then she wants 5 colors then thats $25.00 just for the Thread and then its $10 for setting up pattern and then $1 for each color Change so by the time you tell her all this she won't want to bother you for a FREEBee... and that you need a piece of the fabric to practice on ..too