She likes the products, and gets discounts this way. She's not in it to make money, so when she asks friends if they want to place an order, it's not to make money from them but instead to help them buy products they also like for less.

Please don't get defensive about this. I'm not trying to be a jerk about what your wife is doing--I've really tried to be respectful. But, most of us are completely honest when we say we've seen this thing over and over and over. That's why I'm curious about the trajectory of the one your wife is in: will it match up, or will this one be different? I'm pretty sure history repeats itself.