What you are explaining sounds like she was scenting her tub to me. Some eat all they way up to laying but most don't. I would check for ovulation. And if you can palpate that is a great tool in leading up to and after ovulation. After they ovulate she will hug the heat side almost all the time. The easiest way for me to tell if ovulating is the tail suck. Watch a video on it. If I were u I would just keep pairing cause right now sounds like she is just building. Hold her up and let the rest of her body hang down and a lot of time u can see the follicles or egg . Keep pairing and good luck. Post some pics