A Broken Promise?

I'm trying to figure something out. A while ago, an associate of mine promised she would handle a project for me. She volunteered, and I happily accepted. It's been a couple of months,and she hasn't come through on the project. In fact, she has not even mentioned it. I talk with her at least twice a week about topics related to this project, but she never brings up her promise to me. I feel like I should not have to remind her about this, and if she changed her mind, she should have the guts to say so to me. I have to pray about this, because I can tell I'm getting ready to get an attitude!