Who knows why MLM, certainly not me. As I said earlier, we're basically beyond the point of trying to rationally assess this as a business prospect. The fact that she let me know in advance this time is an improvement; the last time it came up only after I asked her about it. She had asked me to bring her the credit card and I casually asked her what she was buying; I do this as a matter of routine just so I when I see transactions post to the account I know it was a valid purchase (it's never caused an issue before).
This time however, her response was that she was going to buy the $700 starter kit of cosmetics for a MLM program and had to complete the purchase within 2 hours to get her "bonus supplies" we had a long chat. Needless to say I was a bit upset because our standing agreement is to consult each other before large purchases (anything over a couple hundred dollars) as a courtesy. While trying to keep the discussion from getting too heated, I asked her questions about whether she had a business plan, how compensation would work, etc. and she agreed to defer going forward until she sorted these out. Until last night, when she brought this up again with a new company this time, and telling me she planned to proceed regardless even if she had to use personal "allowance" funds for the initial enrollment. She also dumped the returning to grad school thing on me at the same time.
Kindly withhold any suggestions of counselling, etc.