Does Diala (the padawan) when using force adept have to have line of sight for one of the other heroes, to use the force adept ability from her class deck when its equipped?

I don't have the card in front of me, but I'm almost positive that it says nothing about range or line of sight and can be used to have a hero reroll when they are attacking or doing an attribute test anywhere on the map.

Having encountered this exact ability on the weekend, MikeNYHC is correct.

The ability doesn't mention range or line of sight at all.