She guides them through the portal. They don't arrive in the Nexus, since she didn't want to leave Dana there unprotected and unaware of her surroundings.

Instead she had brought them to Lorne's bar in Los Angeles. The one place she knows she can trust someone to watch over Dana until they return.

Lorne himself turns when the portal activates. He frowns at the three people exiting, only recognizing one of them. "What mess is this now?"