Hmm I'm not sure but it might be an Astrex furred rabbit but they are more of a wavy kind of fur. I am just kinda throwing the possibility out there, so it may not be right.
Well if you want you can put the female in a separate location while she is feeding her kits. Though in colony breeding situations these issues are minimal so it shouldn't be a problem.
Since we posted at the same time I didn't see your post but the above is a good solution that implies to your situation. I might also add that you should monitor your rabbit for labor closely incase the other female reacts negatively. Also you might want to add a nest box in with your rabbit...
But if there was an intact male that came in direct contact of your rabbit than your rabbit may very well be pregnant. You should palpate your rabbit to feel for small grape sized lumps in her abdomen to see. If you don't know how you should check out some videos on youtube to find out how.
On...