Come on tour with us

I'm whos sister?

This is what Lucas Anderson looks like!
"Dear Sam,
We have to give you away because we already have a son. We just don't have enough money. We are sorry. I hope we can meet you. You have a brother named Ashton. He knows nothing about you. We gave you to Alex because we can trust him. Please forgive us. Alex has our number. Please call us. Happy 16th birthday!
Love,
Mrs. Irwin" I read. Wait I have a brother named Ashton and my last name is Irwin. "Can I call them?" I ask. He hands me the phone after he dials the number. I walk in to the bunk area.A woman answers the phone. "Hi Alex!" She says. "Hi this is Samantha! I got the letter. I would love to meet you. I have a question." I say.
(S-sam and M-her mother A- Ashton)
M- Oh my goodness! You can ask me anything.
S- where is my brother? I want to meet him. 
M- he is on tour with the Electraz
S- is he Ashton Irwin from 5 seconds of summer
M- yes he is!
S- he is right here with me. I'm sky from the Electraz. Everyone thought we are related. Would you like to tell him.
A- hello?
M- hi Ash! I need to tell you something.
A- ok what is it?
M- Sam is your sister
A- really I can take her to meet you. If that's ok.
M- I would love to meet her. Bye love you.
A- bye mom
He then hung up. "So we are related?" He asks." Yes my brother. So how do we tells them?" "Let's just tell them." We walked out of the room. Everyone was staring at us. "I have a brother named Ashton, so you guys were right. We are related." I explain. Everyone looks shocked. "Told you!" Michael says. "What about Bailey?" I ask my dad. "She already knows you are adopted!" He explains. "When's graduation again?" I ask him. "5 days!" He exclaims. He sounds happy. "When are we going to be in Australia? I need to go back." I explain. "Why? You live in LA." Luke asks. "One. I lived there for 2 years.2 I need to see my sister from another mister. 3 I want to meet my parents." I explain. "How old is she and are you related?"Ashton asks. "She's 20 and no. She's Lucas' sister." "We are going to Australia in 2 days and we are flying there from Pennsylvania." Lucas finally answers."Sound check!" Steve calls. He's are manger. Uhh I don't want to go! We all get off the bus and make our way to the arena. This will be fun! Note the sarcasm. The show will be though.