I believe in the "teach them to fish" program.
IF she has the interest and you are willing...help her make the first one or two and then have her make the other ones.
If she claims she can't sew on a button, then tell her these aren't buttons, silly rabbit, their purses and they are easier than a button, lol.
I've never been able to be fair with my time when I tried to help someone out...I didn't want them to think it was ridiculous the amount of time it would take to do a project. I know it takes me at least 3 hours to do a bowtuck once it is cut out ... but I may be slower than most. Even at $8/hr that would be $24 a purse.
Sorry I know I wasn't much help :(