How about doing an ole switcharoo? The next time she makes her usual visit, she sees you all spruced up wearing a new shirt and smelling good with a different cologne than your usual brand. Within just a few minutes of her arrival, you inform her you are going out and there's probably something to eat in the frig. Don't be sarcastic or cold. In fact, act as if you are excited to be going out. If she asks questions about where you're going, and who you are going with (and she will)..........be vague in your answers. I'm not telling you to lie, I'm suggesting you be a little mysterious and don't give her details.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!