Thank you for taking care of her.

Pregnant kitties eat an enormous amount of food. They need massive amounts of protein.

For right now, if she is pregnant, giving her all the food she wants would be helpful for her nutrition. Otherwise, her body starts giving up its nutrition for the babies.

I've had no luck with outdoor shelters for feral kitties. For feeding, though, I lay a plastic litter box bucket on its side and put the food in there to protect it from the weather. The kitties don't have a problem eating from the bucket!

If you're interested in an outdoor shelter, see here:

http://indyferal.org/index.php?page=shelters

Good luck to you and the kitty.