I’m going to be harsh here. She only charged you $150 for a wedding, and you expected great photos? Anyone who puts themselves through the hell that is wedding photography and only charges $150 is not going to deliver quality work. You get what you pay for. No, the photos aren’t good. But you agreed to pay her; you need to pay her the full amount. If you go to a cheap restaurant and order a $6 hamburger, will you refuse to pay for it because they didn’t bring you a filet mignon?