Houses Festri and Tellari have been trying to get the gate working for months. Their Liar work crews have finally gotten it to do something, but none of the Alteri ships have been able to use the gate for long-distance travel. They simply pass through to the other side.
The Alteri order the Liars to fiddle with various pieces of the structure, hoping that one of them will be able to determine the problem. Imrainai passes through the gate purely because it's the shortest route to the piece she's supposed to fiddle with.
She lands somewhere with gravity, where she promptly trips over her own feet and falls on her butt.
Her suit computer informs her that she has returned to Liar-safe atmospheric conditions.
She looks up.