To find Miss Xaihi, simply head all the way down the end of the Engine Room corridor. There is a tiny cabin. Miss Xaihi is definitely there outside her duty hours. Rap your knuckles on the door then recite according to this simplified chant brought to you by Miss Xaihi Church Fanclub. DO NOT, UNDER ANY CIRCUMSTANCES, DO NOT LET MISS XAIHI AWARE OF OUR CLUB'S EXISTENCE:

"..-/-/...../...-/-/-/-/-../-/-./-..../.-."
Good day, Miss Xaihi. I hereby agree...
to never take your humble retreat as a part of the Engineering Division.
to never treat you as our walking Stack Overflow.
O Knowledge most ancient, Veritas, has taught me...
to first check the power cord.
to then try restarting the device.

If done correctly, the sliding peephole will open, showing Miss Xaihi's beautiful azure gaze as she greets you with her polite voice brimming with hospitality. Disrespect the code and Miss Xaihi will kindly ask you to leave.