It's the exact same scene that my mother and I often find ourselves in, and I'm already in my 20s haha! So, don't sweat it, it's perfectly natural :) Mom's are built to kill (or at least attempt to get rid of) spiders that are the size of your fist. We men shouldn't be bothered with dealing with such things. Women are better equipped to handle these situations. It was a sound strategy, one that I myself subscribe to. Might I add an additional suggestion, while retreating you could also squeak like a little girl. Because... cough that's how men honor women, right?