About 10 days ago, I was wearing an expensive pair of designer shoes for the first time, and a restaurant server dropped a bottle of white wine at my feet. The wine soaked by black satin shoes; there was so much wine that I had to take off each shoe and pour out the wine. Although there are no apparent stains on the shoes now that they have dried, I am wondering whether the wine that dried into/onto the satin may structurally damage the fabric over time. Is that likely? Is there any safe way to clean the shoes? Thank you for your assistance.