I recently took photos for a friend of my aunt's. It wasn't her wedding, but her daughter's. I only charged her $70 because all she wanted was the pictures on a CD. Now that she realized she doesn't have her photo editing software, she asked me to edit them, which I have no problem with. The problem I have is SHE WANTS A FREAKING NEW FACE! Literally, she wants me to fix her bangs so that they're "a little above [her] eyes" because she didn't have a chance to get them cut before the wedding. She also wants all her wrinkles removed and the color on her face and neck evened out. I don't mind doing small blemish corrections, but this is out of line. How can I tell her that I'm not comfortable making the photos look unnatural. I don't mind removing zits or SOME minor wrinkles, but she basically wants me to make her look 22 again. Oh, and she's not paying extra for this. I have 400 pictures to edit, and I'm doing it for free on my free time after my FULL TIME job.
I'm not a professional, only an amateur photographer and I'm using Photoshop CS3 to edit the pictures.

Also, she works for the University I work for so she's already e-mailed me TWICE today requesting more edits and even called to see if she could COME BY MY OFFICE TO LOOK AT THE PICTURES! I DEFINITELY don't feel comfortable working on personal business during my office hours, and that's exactly what I told her. I also have told her that fixing her bangs is going to take a lot more time and I would have to charge her extra.

She still insists that it will be a simple thing to do and with her "old Nova program" she could edit the bangs real easy. So I told her she should try to find that program and fix them herself.

One thing, I've learned that I will definitely be setting limits to what I do and what I charge in the future. This was my first wedding to shoot and it's been hell. She's insane. IT WASN'T EVEN HER WEDDING. IT WAS HER DAUGHTER'S.
I really appreciate everyone's answers. It's going to be hard to pick just one.

Oh, and I don't believe in piracy so giving her an illegal copy of Photoshop CS3 is out of the question. But thanks anyway.

just edit them how you feel they should be done and give her the cd or prints or whatever. if she isn't happy, tell her she should have paid for professional services (you didn't mention if you are professional) if you are a trained photographer, then tell her that any additional alterations are going to have to be paid for.