Bingowings said:
Wasn't it something like "and you call yourselves human"?

That seems to be more of an expression of moral indignation than emotional turbulence.

Leia possibly had been trained to keep her emotions in check and stay focussed on the task at hand but going by what she does in ESB and ROTJ she often let's that slip and that must have been one hell of an emotional stab to the heart for her.

This line would have been interesting as it would have shortly followed the (then) cut line of "Jabba, you're a wonderful human being." The contrast of these lines close together is interesting.