She was calling you fugly, if that makes you feel any better. Yes, misunderstandings can be issues...

What Kim may have been getting at is that, quite bluntly, the world doesn't revolve around you. I understand you getting upset about the water thing- I've reacted worse in a similar situation. I even understand that you were upset about her taking his side, however they were playing pranks so I understand her side of it too.

If I was Kim I would have said, "No, I'm not getting involved, call her yourself", but that wouldn't be an excellent example of mediation skills. I think it would be a good idea to, if you haven't already done so, try calling her and acknowledge/understand the reasons she's upset at you and express your reasons for being upset at her.

*phew*. My ring finger is getting stiff, so... ohh yeh, I can ride my bike with no handlebars, no handlebars, no handlebars... *falls off the edge of a bank*