Wow, didn't expect such a cynical response. This really happened to me yesterday. I keep reliving the experience, somehow it traumatised me.
I had to pull her up, at least a little, to figure out how bad it was. But I pulled her up gently from behind which caused her to stand up, I don't know that any kind of gentle lifting of her front would have caused her to do anything but stand up. But it scared me that she stood up, I wanted her to stay sitting and not move so much. She could have broken a limb, after all.
It turned out she had "only" broken a top front tooth and cut her chin. I put her broken tooth in milk (was that the right thing to do?, dentist glued it back on 45 minutes later). She said her jaw really hurt but it didn't seem swollen, I don't know how else I could have assessed whether she had broken it.
I got her to start breathing more slowly because she was almost hysterical. She was so shook up, though, I haven't had to deal with something like this before, I feel sure I should have handled it better, but I can't get a grip on what all happened.
Parents are not at all cross with me but I feel awful that it was a potentially a disfiguring injury, she'll have to be careful with that tooth for life.