Hmm.  Well, if I'm playing to character, Xia's equally likely to A) just carry Lauralan's stuff because she's irritated and just wants to head further down for tougher enemies, or B) call her something<em>terribly</em>unflattering in her native language, and then tell her that if she wants Xia to do<em>anything</em>for her, she'll have to either prove herself worthy or fight her for it.