Girl politics can be REALLY complicated!
Then there are the woman (mom) politics on top of that... (D's mom was just mortified, worried that we'd say D could never come over again, yadda yadda... all seems fine now though.)
The incident was one of those spiralling things. I had offered to watch both D and her little brother T, (usually just D comes over), and D wasn't happy about that because D wanted sozlet all to herself (while sozlet was happy to include T). So there was some disgruntlement from the start, and the "...or I won't be your friend anymore"-type stuff. (T came to get me and I went upstairs to find sozlet stuck at the top of the stairs because if she moved, D wouldn't be her friend anymore... eek.)
But things went basically fine until D's mom arrived to pick 'em up and it was time for clean-up, then there was some sort of power jockeying ("I'm in charge of clean-up!" "No,
I am, it's my house!"), which culminated in D snatching a tablecloth they were vying to put on a table and throwing it angrily. D's mom (DM) took stock of the situation and thought it was time to get going. D went ballistic, and started yelling for her teddy bear. Sozlet offered her own teddy bear; D angrily swatted it away. DM started getting D ready to go -- socks, shoes, etc. D continued going ballistic. (This was when "SORRY!" was being aggressively yelled.

)
Then they (D and DM) went off to get ready, while sozlet, T and I finished cleaning. T was playing with a little cheapo snowglobe of sozlet's and didn't want to give it up. When we got downstairs, where D and DM where wrapping up, sozlet said that T could keep it, stipulating that he had to share with D. That set off a new round of hysterics from D, culminating with something like, ""Nobody's keeping anything until [sozlet] DIES!"
That was the main thing. DM went ashen, apologized profusely to everyone (D wasn't having the apology business, she was still mid-tantrum), and hustled D outta there.
Whew.
But, again, everyone's over it now.