Congrats Breny!! It's good that she's resting in between. She can do this for hours. The digging is her way of working out the labor pains. When her tail stiffens and she's seriously bearing down is the time to get ready. This has been my experience as a general rule, but just look for a sac or her water breaking. If this is her first litter, she could go quite awhile. Try to stay calm. (easier said than done..lol) And good luck! Can't wait for an update.
Janet