If you dint' find anything yet, check out...
https://www.warmnsafe.com/
I have the original ladies liner. I only turn it up a bit more than halfway even when it's freezing outside.
If I was to get one now, I'd pbly get the lower heat range one.
They're actually fitted for riding sport-touring bikes.
The one time I had it turned up a bit more than 3/4 on the Heattroller, I was on a cruiser and was just too lazy to stop and turn it down a bit.
the temps were in the low 30's and I was darned if I was going to make any more stops than I had to! Only 150 miles form home, and about 10:30 at night....
Because of the way I was sitting, I almost burned my ribs... ok, I almost burned the fat on my ribs!
Not the equipment's fault at all....
I. learned a few lessons... wear a thin vest as well as a **** underneath, (or lose weight, I'm working on that part! <LOL>
2. If you actually feel the heat, rather than just comfortable, it's turned up too high.
3. Wear the liner, even if it's in the 70s out, just plug it in when you start to feel chilly. Much better to stay warmish than to get cold and try to get warm again.
4. Wear gloves with gauntlets... and a silk scarf or something similar around your neck and over your mouth if it's really cold... freezing air blowing down your neck or up your sleeves sucks big time!
Hope you find something she likes,
good luck
Mary