Hello,
I have 7 peafowl, two very tame but living free and just roosting at night in a large poplar in the garden. Your peahen will be fine for the next few months as she will roost out of the foxes range. The only time she will be vulnerable is if/when she starts laying as she will then sit for 5 weeks and hardly leave the nest day/night. She might get lonely so is likely to wander off early next Spring or she might just "seem" to disappear when actually she may just be nesting. Obviously with no male her eggs will be infertile but she'll still sit. You could be very sneaky and follow her back to the nest if she comes for food, but you'll have to be clever as she'll lead you all round the houses if she thinks you're following!! You'll know if there are any males about as they'll start calling from about March...you won't miss their call!!
If you want to get her tame, she'll love some sunflower seeds and a real treat is grated cheese and grapes!! Feed her at a regular time each day and she''l soon learn!
Unusual for a hen to wander, it's generally the males without a mate! If you feel you want to find her a mate, you could advertise to see whether anyone has a lonely male. As, during nesting, the females are often lost, people end up with lone males so your female should not be difficult to rehome.
Meanwhile, enjoy her company and feel privilidged that she has chosen to stay with you!
If you have any specific concerns, feel free to e mail me.
Good luck!
Judi