It's a concern that has been asked given that the beginning of time, or at least since sweating became a thing: do mistress feet sweat more than other feet? The answer, regrettably, is that we just don't understand.
There have actually been no scientific research studies on the topic, so we can just speculate. Some say that it's due to the fact that mistress feet are normally covered up, so they don't have an opportunity to air out and dry correctly. Others say that it's because girlfriend feet are usually in high heels, which limits blood circulation and triggers sweaty feet.
Still others say that it's simply because some individuals sweat more than others, and there's no scientific proof to support any of these theories. For now, click this to the concern remains a mystery.