I am pretty sure my customer is lying to get free product

I had a customer of mine email me on Monday about a cake she picked up on the 20th (1 day shy of being 2 weeks later). The cake was fairly simple, it was a square cake with a guy bench pressing weights and weights on the top to look like a gym. I had to use wire for the bars that hold the weights and there were 2 big ones and 2 small ones but nothing went into the cakes just the fondant decorations on top. I don't put wire in my cakes and when I have to use then for decorations sitting on top I always warn the customer about them and tell then to take them off before cutting the cake. I told her this as well. Well, when she emailed me she said she just wanted to let me know they found small metal objects in the cake. I asked her if she took the objects off like I told her to and she says yes. I am giving her free cupcakes (which she is picking up today) but I asked her if she kept the pieces and how many and how big where they. She just wrote me saying her boyfriend (not her) found 5 pieces and they were small and of course she did not keep them. I did not even have that much wire on the top of the cake so how in the world would it get inside the cake. I wasn't even working on the cake when I make the decorations, it was already fondant covered and in the fridge when I started on them. I am pretty sure she is lying to get something free. I just don't understand why it would take her almost 2 weeks to resond and why she wouldn't keep the pieces to show me if she was concerned. I don't mind doing the cupcakes but I am just so mad she had to lie about the reason. I just really needed to vent.

I totally agree as well. I had planned on going through with the cupcakes and never dealing with her again. I emailed her after her last email telling her I really don't know what was found in the cake but that I thought it wasn't my wire but I was very professional and nice about it and told her when she could pick the cupcakes up. She emailed me back and said she wasn't even there when her boyfriend found the pieces and he almost choked but that the cake was great. I'm confused about how she was able to taste the cake to know it was good but not there when her boyfriend (which was his birthday) when he almost choked on metal in the cake. Nevertheless, I will always be unable to make a cake for her in the future. Thanks for all your input.