Apryl didn't know how long she had to stay outside waiting until Brian was off the phone and everything seemed safe enough for her to go to where her family was. Even after the other werewolf had gone inside, she waited for a while longer before making her move. Better to be safe than sorry.
The one thing that helped her to feel better around her exhaustion was that her family still seemed to be doing well. Everyone looked well at least beyond her mother still look worn from having to take care of the pups.
Once Apryl had been kicked out, the rest of her sisters had stopped going inside the house as often. Lydia said that it might be for the best if they only did it when Brian wasn't around in order to decrease the risk of any problems occurring.