Assuming you are playing the current version you can turn on auto dash, or just use a controller with an analog stick.
With a lot of platformers. They usually have a "Sliding" state. For Instance, say she's dashing and the player turns the opposite direction. With others, they would have a very short "sliding" animation where it slows you down but after like 1/3 of a second, she's back at full speed the other direction. It's easier for the player to adjust and compensate. Only for dashing tho.