Formal:
* Est-elle là ? (This is the most direct and formal translation)
Informal:
* Elle est là ? (This is a slightly less formal option, but still polite)
More casual:
* Y a-t-elle ? (This is a more casual way of asking if someone is present, but it can be considered slightly informal)
To ask about a specific location:
* Est-elle à [lieu]? (Is she at [location]?)
You can also use the verb "être" (to be) with a specific location, such as:
* Est-elle dans la cuisine? (Is she in the kitchen?)
* Est-elle au bureau? (Is she at the office?)
The best translation for "Is she there?" will depend on the specific situation and the level of formality you want to use.