"Hun blander det hele."

Translation: She mixes everything.

[rolandjaspers]

Is ' hun blander alt' possible?

[RyagonIV]

Sure, that works, too.
"Det hele" is better translated as "it all", i.e. a very certain amount of things.

[KyleJDahl]

She mixes it all?

[selfda]

is "she blends" OK?

[deactivated user]

Yes.

But if you're blending something in a blender, use "at blende" (pronounced like in English with an added [ə].

[JenseninToronto]

she blends it all?