Congratulations for you AND your daughter, that sounds like an excellent success story. I was UN-shocked when my son started smoking cigs at around 16.... I ended up purchasing all his initial vape gear (he selected, I purchased) and he did really well with that for around a year (including buying all his own e-juice). One year into vaping, after reducing his nicotine a bit, he shattered YET ANOTHER glass tank (he has ADHD) and I saw on his face how annoyed he was, as I was dropping him to a college class. The following day he quit all nicotine products, including vaping, cold turkey. He did fantastic, and I was eventually regifted all his equipment, he used a sub ohm tank so all I needed was a nautilus 2 tank (using 1.8 coils) and I was pretty set to go (after some assistance here.) I NEVER felt guilty at ALL EXCEPT when my son was smoking cigarettes as he had seen me smoke for YEARS, and I know the correlation between smoking in kids of smokers. Though, I never smoked in the house. I was SO PROUD, he's on month 3? 4? Hasn't looked back and hates the smell of smoke. I guess it's true that if you do your job right, your kids will turn out better than you, LOL. This feels both great and awful.
Now, I have been working on my own switch from analogues to e-cigs, and I do think my son's successful quit played a role. Every time I wanted to smoke I'd think about the fact that my *19* yr old did something I couldn't, and was smart enough to do it before he got horribly addicted to cigarettes, as well as wanting to be around to see grandkids instead of dead of COPD. It's clearly easier to quit vaping when you are ready, was my observation.
So I think you are a great mom, clearly, and I totally 100% support your decision. It does not matter what ANYONE thinks but YOU and your DAUGHTER. Don't worry, the naysayers will die off. I think it's great that your daughter wants to pay you back for the equipment, and it's fantastic how supportive you are being. Best of luck, I praised my kid heartily the whole way through, and I think that may have helped, but he was OBVIOUSLY ready to be DONE with nicotine in any form, which was awesome.
Anna