Prue had hugged each and every one of her family once they had returned, thankful they were safe. She also noticed Niki standing in the background and then Orbing out without saying a word to anyone. Prue didn't need to be an Empath like Phoebe to know that Niki was probably feeling lonely right about now. After all, after Andy died, before meeting John, that's how Prue felt most of the time; especially when she'd see Piper and Leo together or Phoebe and Cole when they were together.
"You go lay down Piper. I can look after the kids and the Manor for awhile."
Prue was clinging closely to John, relieved for her sake as well as their baby's that he was safe. And she couldn't express how relieved she was to know her brother and sisters were safe as well.
Prue looked around at everyone.
"Niki just Orbed out. I think she was feeling a little left out, maybe even a little lonely. Everyone had someone to hug and hold when they got back, someone who was thankful their loved one was back safely....except her. Also, what do we do next? After everyone's taken a good long rest."