In reply to elliot.baker:
Where is she based? Are you looking at any particular area in the Peak?
If she's looking to avoid too many hills at the mo, a good way to do that might be circumnavigating a few reservoirs. Agden and Damflask have nice paths around much of their water's edge, doing both from Low Bradfield would be about the right distance. There's a nice path around Dale Dike res too.
On the other side of the hill to the north, perhaps a wander around Broomhead and Moor Hall reservoirs?
The paths around most of the reservoirs do tend to be pretty muddy this time of year though.
When it's running you can use the bus up the Upper Derwent Valley for some nice A-B walks, here's a suggestion:
Park the car somewhere near the A57 in one of the laybys or carparks on the road to Fairholmes. Take the bus up past the Derwent & Howden dams to West End. (The hairpin bend in the road at the side of the Howden Reservoir.)
Perhaps explore along the River Westend a bit (it's gorgeous), before coming back and striking off up the hill to Alport Castles. It's a stiff climb for about a mile or so, but there are stunning views as a reward. From there turn left and wander along the ridge all the way back via Rowlee Pasture towards Crook Hill and back down to the road. The boggiest bits up of the path up there have stone flags, and the view continues to be very impressive all the way from Alport Castles back to the A57. Not one for a windy day though possibly, it's pretty exposed up there.