OK, so we went out, and had a very nice dinner. The gift cards helped a lot! On the way home we stopped at Target, to look for some storage containers for some of W's quilting stuff. While she was looking for that, S13, S10, and I wandered a bit, S13 wanted to see if they had Rockband for the PS2. They did, and he checked out the price. Then he mentioned it to W. this set her off on how much he plays electronics, and how he doesn't draw anymore. He said he doesn't draw because she was trying to direct his drawing, and tell him what to draw. (I don't know the facts, here. But, it would kind of fit her controlling nature.) Anyway, a Target she found out that they didn't have what they wanted there, but did at another one on the way home, so we were going to stop there. In the middle of the argument with S13, she decided she just wanted to go straight home. So, in a typical fashion, she "punished" herself, and now will be able to blame S13 for her not having gotten what she wanted. She won't say anything, but I am sure that's how it works. About half way home S13 apologized to her. She said, "It's ok, but we have to talk about it later."
So, there you go!
DH, I can't keep up on all the posts anymore so I may be out of line but....
If W was acting like a pouty little kid then you should have stepped up to be the parent and guided the whole family to the next store and get W what she was requesting in the first place. You see, when S13 wanted his own stuff that took the focus off W's purpose and she wasn't important anymore. She wants to be important, and she tries so hard by making everything her way or no way and getting angry and controlling when it does not work out.
You say you don't know her LL, let me offer that it is WOA. Try it. Feed her ego. Put on your alpha man pants when the situation requires them but leave the arrogant ego that can so easily go with that in the drawer.
Live your life while you are still living. Riding the trail less traveled.