If you don't call her this will weigh on your mind forever. I'm sarcastic and hate confrontation so I would call her and say, "Oh, I'm so glad you answered. I thought you were dead because we agreed that you would call me about the price of the plaid fabric that you got from me and I haven't heard a peep from you." If she says she's sorry, she's been busy with the wedding, and ask how much you want for the fabric, then you'll have your fabric or money. If she says she'll call you back or makes some other excuse then I would somehow remind her that she goes to church with your mother and I guess you will have learned a lesson. Let us know what happens.