I feel her pain. Literally.
Tom's of Maine makes a couple of non-mint toothpastes, but they're fluoride free. The only fluoride toothpaste we've found that's not candy or fruit is Kingfisher fennel. We buy it from US Amazon but it's mailed from the UK.
One of the top results for fennel toothpaste. https://www.amazon.com/Kingfisher-100-Fennel-Fluoride-Toothpaste/dp/B0013G8LBU
I found some really good liquorice toothpaste that you might like (I'm in the UK though so you might not be able to get hold of it).
Edit: this stuff
https://www.amazon.com/Kingfisher-100-Fennel-Fluoride-Toothpaste/dp/B0013G8LBU