Aside from anything else that may concern you, I'd wait. My 13 month old was later to walk than my other two boys but he managed and is really cruising now! He's been walking about a month. It sounds developmentally on track if she's trying. Just ask at her appointment if you're still worried.
Andi, wife of Seraphim
Mom to Elijah (6/05) and Moses (6/08) and baby Joshua, UBAC February 18, 2011!
Mine's not, either--sounds like they're in about the same place. She looks like she's trying to, sometimes, but mostly only gets as far as kneeling. If I give her my hands, she will scramble to her feet, but that's with me guiding her.
FWIW, we did just have her evaluated for other mobility issues--no crawling, only intermittent rolling, and only very clumsily getting herself into sitting. Turns out she (just barely) qualifies for some visits from a physical therapist. We haven't seen one yet but one is supposed to call within the next couple of weeks. I asked if it was the kind of thing we could just wait out, and the woman who evaluated her said that at her level, it will probably only take two or three visits to get her caught up, but it doesn't hurt because the earlier you intervene the easier it is.
but all that was more about her difficulties crawling/sitting/rolling--basically, she has trouble understanding the transitions from one position to another. I don't think it's unusual at all for an 11-month-old to not be pulling up. It sounds like she's on the right track!
Fiction writer by training, writer/editor of anything anyone will hire me for by trade. Me + D=my girls E (4/2011) and little N, 1/2014.
For what it's worth, my son could walk (very well) before he could pull himself up. Kids really do have their own timetable.