Both Alphys and her new 'friend' immediately forget that they were afraid of each other, and hug each other tight at the sight of this new... thing. Until it dies down, and she can see that it's a human of some kind.

"She scared the daylights outta me!" The other critter yelped, pointing at Alphys accusingly.

"W-what! But you snuck up on ME!" Alphys insisted.