You could have a little both and have it be something like,
Offscreen: From the texts. Leia showed me how.
On screen: Force energy from me to him.
I don’t think you have to spell it out more than that. But I do agree if you had to pick one, it is better to go with Leia, but I think you could do both.
I agree with Burbin regarding Ben. Force dyad stuff.