You tell Victoria not to worry, before she leaves. And right after Victoria left, you create a circle to bring Catria back, in case you digest her. You had also notice Catria was a bit stuck, so she helped her put a little, by stretching the sides of your tentacle's maw a little wider, so her hips could slip by them.
Just at that moment, however, Catria used her feet to push herself forward, which sends her sliding down the tentacle much faster then either of you expected. You watch as her legs all but disappear into the tentacle’s maw, and you hear her moan softly as they do. She stops just short of being swallowed up completely, with only her feet hanging out of it’s maw.