You let your lusus know that you'll be "flying the coop" — as in the metaphorical nest. Which is your hive, in this instance, and not her. She nuzzles down against the top of your head, quietly chirping as you give her neck feathers a delicate ruffle.
She can't come with you. Though she's made the attempt, it seems you're the only one who can go through the portal. And you wouldn't want her to, anyway. She's already spent far too long being used by others; you're not about to be the next one to try and clip her wings.