And more hurt by all of this than she'd like to admit
It really is an uncomfortable situation all around
Leia will still slap him for you if you like
She should continue her conversation with Cade about it 
I'm sure that'll make her feel better. That or maybe some Athairian coffee.
I'm sure that'll make her feel better. That or maybe some Athairian coffee.
(See if you can find the sarcasm in the above statement, kids!)
Why does Luke need slapping? 
principle
She still doesn't want Leia to slap him.
She's just... well she's not sure how she feels
He's so confused.
She's just providing support
and using her sister privileges
There is no handbook for this situation