A Stafford wrote:

How can I recover a miniature rose that the leaves have all fallen off?

Take it outside and plant it. Roses are not indoor plants. The people who
sell those minis expect you to enjoy the blooms, then throw it away when
it dies, as roses invariably do when kept indoors.

Ground frozen? Then put the potted mini in the brightest room of the
house, keep it moist, and plant it when you can. One very important thing
is to NEVER let this or any rose SIT in water. Put the pot in the sink and
run water through once a week. When it has drained thoroughly you may move
it back to the window. It will keep looking bad but will stay alive. In
the spring, plant it in full sun (6 hours or more) in a roomy hole full of
rich soil that DRAINS within a hour few hours or so when you fill it with
water. Your mini is an "ownroot," and ought to delight you for years to
come. Good luck.