Err...I think the first few panel is just about Remilia asking if there is something wrong about the Gatekeeper, Sakuya saying why would there be anything wrong and Remilia asking if she really feel that nothing is out of place.
This is just assumption and badly translated though. I'm not sure if it'll help, srry.
He-HelloGatekeeper Vorspiel?
I am not sure I understand what you are talking about.....Was our gatekeep always like that?I will bring your food now, then.No, she did not use to let intruders escape... I suppose I should give her a talking to.Not that! She wasn't that beastly yesterday, was she!Sakuya...