MMS has multiple phone numbers and phones. She is fairly decent with technology.
A few neighbors are friends with MMS and some play majong with her. (I've been invited to play once or twice, but I would quickly lose face for my lack of skill
.) She doesn't make a ruckus and does her business as quietly on the block that she picked for it. Most of her clientele is Asian. Patrons without manners get blocked promptly and lose access to her network. I think I mentioned this before, but this is not her first business.