Hi Lxx,
Don't worry. You yourself have said that you have read this skill is learnt from 6-12 months so by the time you read this, she might have already started!
Is this your first baby? If i were you, i wouldn't try rush it.
I have 3 kids and they all developed normally but at different times.
For example, if your daughter is "behind" what is "normal" (and what is normal anyway?), then she might be "ahead" in talking or other skills.
I have this untested, wild theory that their brains focus on developing rapidly on certain things at a time.
We thought our son would never walk - and he was HEAVY to carry - but then all of a sudden he just did and now is a faster runner than his older sister!
I am sure your baby is normal...but if in doubt, ask your GP or paediatrician.
Good luck!