Left side

Left side
The left side (larboard) - the side on which the ship was loaded. http://www.history.navy.mil/trivia/trivia03.htm

- the girl that is always ready to listen your problems.
What you think?

I don't know. I've never come across that expression.

Are servants supposed to reach in to the table with their right hands? Maybe "the girl that waits on you with her left side" is "the girl who does everything a little wrong/clumsily"?