I think I've got through to her. No mention for a while.
You still need to have your "no"s ready. I doubt she'd truly give up after just one day.
I know, but the fact she is backing off has to be good. I have my "no's" well and truly ready. My last text said "Friend, I don't want to fall out with you over this, but you have to respect me when I say I am not interested. I don't wannt to discuss this any further." She respondedL "OK, I am sorry for bugging you." I didn't reply to that one. She does text me about other things, and I respond to those texts. When she either texts me telling me about her "opportunity" or brings it up in a phone call, that is when I make my polite excuses and leave. It's now not about money or anything other than her not respecting my "No".
I really don't want to fall out with her over this. She's a nice person generally, when she's not in some hairbrained idea. Next step will be her wondering whether it is really such a good idea. Then I will get a phone call at xpm telling me she has given it up or it's not working or something's happened. Last time she did that I was pg with DS and asleep by 7pm. She called me at 10.25pm. I wasn't happy. I simply told her very bluntly that it was too late for her to call as I was sleeping. She was taken aback, but apologised. She's not phoned me after 8pm since then.