The girls were crawling, and Noelle was crawling all over the place with her army crawl and Gia tried to get her to go faster and Noelle was simply fine at going with her own pace right now 

"Gia give your sister a break" Niall says as he looked at her cause he was a little ticked that Gia tried to hurry her sister along

Gia got pissed off and hit Noelle

"Gia that wasn't nice" he says cause he had to start getting tough with the girls

"Da da da" Gia says cause she was not a happy girl

"Gia even though you said your first word you are still in big trouble" he says as he was looking at her cause he had to be both the good cop and the bad cop with the girls even though he didn't want to he had to 

Niall was going to do time out with them and as they get older, he will do different methods of discipline like the stoplight system when the girls hit red, they will lose everything, and they will stay on red until they earn his trust back

"Gia we are going to do this for a minute" he says as he was going to sit with her cause she was too little to understand it

Niall did a timer and when a minute was up, he took her out of time-out

"Gia are you ready to be a good girl?" he asks her

Gia nods as she says da da again

"Okay now to tell Noelle you are sorry for what you did to her" he says as he was taking her back to where Noelle was

Gia nods again

"Come on then" he says as he takes her to where Noelle was

"Noelle your sister wants to say that she is sorry for what she did to you" he says as he was sitting with Gia who looked like she was faking it

Noelle stood up and wanted to hug her sister

"See you two play while daddy makes some calls" he says as he was going to make some calls

Gia started to play with the toy that Noelle had, and Noelle wanted to play with it

"Girls share" he says as he came back to the girls who were ready to start a fight with each other

She wasn't going down without a fight

"I think I have to separate you too, and since Noelle was here first Gia you go in the other playpen" he says as he picks her up and puts her in her playpen so she could play with her toys as well and leave Noelle alone 

"Gia this is going to be warning two if you can't behave and be nice to your sister" he says as he puts her in her playpen  

Gia started to throw a tantrum, so Niall knew he had to act fast 

"Gia leave your sister alone" he says cause she was starting to be a rebel right now 

Niall knew had to get real tough with her 

"Okay I am going to put you in your crib for your time-out cause you aren't giving me a choice" he says to her

(Later)

"Ma ma ma ma" Noelle says to Niall

"Noelle, you don't have a mom" he says cause he heard her say her first word   

Wishing everyone a very merry Christmas