Ok so the exact dialogue is...
1.
Luke Skywalker:
The Force is strong in my family.
My father has it.
I have it.
My sister has it.
You have that power, too. (Doesn't say daughter or niece)
(NO REVEAL HERE)
**********
2.
The Force is strong in my family.
My father has it.
I have it and...
[looks directly at Leia]
My sister has it. (NO REVEAL YET)
[waits for the words to sink in] Yes. It's you, Leia
(A REVEAL HERE)
************
3.
YODA: Remember, a Jedi's strength flows from the Force. But beware. Anger, fear, aggression. The dark side are they. Once you start down the dark path, forever will it dominate your destiny. Luke... Luke... do not... do not underestimate the powers of the Emperor or suffer your father's fate you will. Luke, when gone am I... the last of the Jedi will you be. Luke, the Force runs strong in your family.
Pass on what you have learned, Luke. There is... another... Sky... walker
pass on to Leia.... The Jedi school in TFA
4.
A Hint at Darth Plagueis
Luke: Master Yoda, you can't die.
Yoda: Strong am I with the Force, but not that strong.
**********
5.
OBI WAN KENOBI: To protect you both from the Emperor, you were hidden from your father when you were born. The Emperor knew, as I did, if Anakin were to have any offspring, they would be a threat to him. That is the reason why your sister remains safely anonymous.
So, Snoke, gets a jump start on new batch of skywalkers. Turn them early so he can keep control. Kylo looks to have been turned early.
This trilogy will end darker. Kylo killed Han. No more light for you. Lol