Bike ideas for a woman, light trails

Hey all. Trying to find a bike for my wife - she still has the Scott MTB she got when she was 14 years old, and insists it's fine, but then complains its uncomfortable after riding any distance 🙃

Something like a gravel bike would be perfect for her - decent on road and light trail. I think a suspension fork would make her more comfortable too - the only issue is that she's decided she wants flat bars which limits the options.

Not looking to spend a ton of money, and happy to go for a good used one if there's a good one nearby (Near Southampton area).

Ideal spec:

• Flat bars
• Reasonable groupset
• Small gravel-type suspension fork
• Hydraulic discs
• 1x drivetrain?

Happy to compromise on these ideas.

Current best idea we have is a Liv Rove 3, but she's not in love with it, and that's about the max we'd want to spend.

Any cool ideas?