My sonny (1 y. o.) has standed already. And runs, runs, runs...
But I don't think you should be too worried about it. I'm absolutely certain it's very healthy to have a very long prepared period (creeping, catching on, half-rising) before standing.
Most babies first pull themselves up to a standing position between about eight months and 10 months. At this stage your baby will need to hang on to you or a solid piece of furniture. By 11 months she may be able to stand on her own. Standing usually comes after crawling. As your baby becomes more confident about standing she will start to move herself around. She'll still want the safety of holding on to a piece of furniture though.
My first son was 9 mo on the day when he started walking. my second son was 10 months old, and my daughter was 11 months old. She would pull herself up at 9 mo and hold on to things to walk, but didn't seem to interested either. But she got it in her own time.
It is so true that each child is different and mine were no exception. My daughter, who is the eldest, took her first steps at about 9-10 months but had no interest in walking. She refused to walk on her own until she was nearly 15 months. Now, my son was walking confidently by 10 months and could not be stopped once that happened. He still has problems staying still. But for my daughter, everything is in her time and no one else's even until this day.