I'll tell you something I just learned recently. I made something for my brother for his birthday. Now this is my OWN BROTHER. Never once did I hear him say how much he liked it. I don't even know if he is using it. I'm sure he appreciates it and I have got to accept that. I am learning that when I make something I FEEL GOOD about it. Never mind what other people think. If you get praise for it, hey that is wonderful. If not just let it go and give yourself a pat on your back. I'm sure the purse is beautiful.
Another thing, my SIL made us a fleece blanket as a wedding gift. My DH thought it was so beautiful that it should of been hung instead of used. My SIL meant to give it to us to be used.
So if I were you, I would just let it go. Who knows you may be surprised one day seeing her wear the purse you made. THAT WOULD BE A BONUS!