Sara: "Jack did you hear that Alana thinks your ugly and Amelia doesn't want to be your friend".
Jack: "WHAT, they really said that how dare they". 
Sara:" Yeah I know I can't believe they said that about you I bet you feel pretty bad". 
Jack: " That makes me feel sad".
Sara:" Hahahahahahahahahahahhahahahahahahahah
As you can see here Sara is telling Jack rumours about Alana and Amelia that are not true. 
Amelia:"Hey  Jack wait stop".
Alana:"Jack Jack hey Jack wait for us".
After Sara told Jack all those rumour he got very offended and upset.  
Sara: Um I I ok fine I told Jack that Alana didn't like him and that you Amelia didn't want to be friends with him anymore that's why he won't talk to you guys.  I'm so sorry. 
Alana: Hey Sara do you know what's up with Jack. 
Amelia: Yeah when we called out his name he just ignored us like we weren't there.
As you can see Jack feels really hurt because Amelia is his best friend and he really likes Alana.
Alana: Oh Sara I don't know why you would do that but I will forgive you for what you did.
Sara: I'm so sorry I don't know what I was thinking I hope you can forgive me. 
Amelia: What I don't understand why you would do that, I'm so annoyed with you. But I can forgive. 
Sara: Thanks guys I'm really sorry and have learnt my lesson. 
With the way Jack is feeling he doesn't want to look or talk to them right now.
Here Sara is confessing that she spread rumours about them not liking Jack. 
Here Alana and Amelia are forgiving Sara for what she did.