V.W.
Yep. I just pretty much gave in with the going to sleep avoidance trips. At first. After about 4 or 5 nights in a row, of her getting up MORE than once after she was already in bed.... I just started letting her know (from the other room where I was) that it was fine. Try and then get back in bed. She didn't get an audience standing nearby while she 'went' to give her someone to talk to, she didn't get re-tucked into bed. It only took about 2 nights of me letting her do it alllll on her own (actually NOT doing anything, lol) before she stopped getting back out of bed over and over. The novelty wore off and the lack of an audience were big factors, but I think the bigger factor was that I didn't re-tuck her into bed.
As for the peeing into the panties b/c it shoots out the front... lol. Yeah. We had that problem alot too. You didn't say how old your daughter is, but mine was only about 2 when she was learning. It was a constant struggle with that issue. In fact, she was SO good at the pottying that the only reason I ever took spare clothing with us when we left the house, was b/c of the spraying issue. Leaning forward is the first thing I'd try, but it has been many years now since my little girl learned (she's almost 10! ). Maybe she could play the little piggies game with her toes, to help her get far enough 'over'? I also think it has more to do with how they hold their hips than how far they lean over. If she arches her back like a cat, it might help, because it'll rock her hips forward and down rather than back and up.... Once you figure out the "sweet spot" where it doesn't spray, then you just have to teach HER how to remember it. Fun Fun Fun! :)
But you'll figure it out. Fear not. In the meantime, perhaps folding up a few extra squares of toilet tissue and holding it right there will at least catch some of it so that her clothes don't get soaked. Yeah... you'll get some on your hands...but they wash easier than the clothes. ;)