All excellent ideas above.
I'll add to give her the benefit of the doubt. For undesirable behavior, if it isn't extremely clear that she is deliberately misbehaving, then assume that she has some reason for her actions that she is not yet able to articulate for you, despite her advanced language. She may have rationales which are perfectly logical from her perspective, that aren't obvious to either an adult or a typically-developing toddler. If it's a persistent behavior, try to figure out what her reasoning might be.
As a corollary, respect her rationality by being consistent and reasonable in your exercise of parental authority. She may already have a well-developed sense of justice, and arbitrary and unpredictable adult decisions and disciplinary actions will violate that sense of essential fairness.
For activities or experiences that might be expected to be above her, give her the benefit of the doubt--that she might be able to access some or all of it, or gain something from the experience. She will likely surprise you with what and how much she takes from it.
Remember that she is still a toddler. (You may have to remind other people of this more than yourself, since you probably don't know any different!
) Even if she can speak, reason, and self-regulate like a preschooler, she still has a toddler's stomach, and maybe sleep needs, too. It is likely still true that the vast majority of momentary challenges can be solved with a snack, a nap, or a cuddle. She will also go through sudden growth spurts--physically, mentally, and emotionally--which may involve puzzling or difficult periods, as she prepares for or regroups from rapid change.
Above all, enjoy every moment. These precious toddler years will be gone before you know it.
