Help me think of a title for an office worker?

I work at a company in the US selling to US corporations, but we have an exclusive vendor relationship with a Chinese company. At the office of the company in China, there is a Chinese woman who is technically employed by our US company, and her main job is translation, as none of us here speak Chinese. She's fluent in English, Chinese, and Mongolian. She's been working for us for awhile now, and performs tasks beyond translator, for instance she's one of the few at the company who can drive, she is the personal assistant to the CEO, and since she translates, sits in on all board/manager meetings, and occasionally offers her opinion on issues discussed. We would like to come up with an official title for her so we can print good business cards, but we can't think of one that would be appropriate. "Translator" is not enough, "Liaison" is our best idea, but there is a negative sexual connotation, "Mediating Assistant" and "Intramediary" were other's I've thought of. Any better ideas?