Rabit doin strange things with hay?!?

If she was with a male at some stage, it means she is pregnant. They do that when she is about to build a nest to have her babies in. If she hasn't been with a male in the last month, then she is having what is called a false pregnancy. When, they think they are pregnant but actually aren't, they have them a lot this time of year when they weather starts to get warmer. She will get over it in a few days.