Transmission Fluid Type

Always put in the correct fluid or you may create a problem. Today's cars are engineered for certain goals, and the fluid properties can be detrimental.
Low fluid however will burn out the clutches and she may have already caused damage.
I'd flush it and get new fluid in it, it's good maintenance anyway.

Here is the fluid it should take.

Fluid Types
A/T Fluid

Type. D-II, DEXRON II or DEXRON III
Capacities
Automatic Transaxle Fluid

Drain and Refill. Up to 2.5 liters (2.6 US qts)

Fluid Type. ATF D-II or Dexron-III - Dexron II (r)

Differential Fluid

Capacity. 1.6 liters (1.7 US qts.)

Fluid Type. ATF D-II or Dexron-III - Dexron II (r)

Total dry fill combined. 7.2L (7.6 qts.)