Homework-Alternative Ending- Someday Angeline by Louis Sachar

I am starting from page 168 of Someday Angeline that is written by Louis Sachar. This is a little part that the author have written previously:

"Abel bent over and kissed Angeline on the cheek. "Someday, Angeline," he whispered.
Melissa held Abel's hand.
"She was all I ever lived for," Abel told her. "All I ever cared about. I was always so afraid I'd blow it for her. Well, Abel," he said, "you finally did it."
"No," cried Melissa. "It wasn't your fault. You mustn't believe that."
Gus and Gary walked up to Angeline. Gus kissed her on the cheek. "Angelini," he said. He too was crying.
Gary also kissed her. He wanted to rip all the tubes out of her. It seemed to him that the tubes were sucking life out of her, instead of giving it to her. "I heard a new joke," he whispered. "You know why an elephant need a suitcase?"
"Why" Angeline whispered.
Gary's mouth dropped open. He couldn't speak. All he could do was point, loudly.
"I give up. Why?" Angeline asked again.
Why wouldn't he answer her? He just stood there, looking like a goon. She looked around the room and tried to figure out where she was, but it was too crazy to figure out. Nothing made any sense. Why was Cool Breezer jumping up and down and whooping and shrieking, she wondered. And why was he dressed do funny? What happened to his wool cap? Why did he just kiss her foot? And now the other one?
"Stop that!" she laughed. "What's going on here?"
And who was that lady dressed in white coming toward her and shouting, "Doctor! Doctor!"
"Why doesn't an elephant need a suitcase?" she asked. Why wouldn't anybody answer her?
The lady in white shrugged. "Because it never takes a trip? Because it doesn't own clothes? Doctor!"
That's not even funny, she thought. "That's not a joke!" she shouted. Why was everybody laughing? It wasn't even funny. She saw her father, and Gus, and Mr.Bone. Were laughing or crying? She was getting very angry.
"What's going on here?" she demanded, but the madder she got, the more she yelled, the crazier everyone acted. Why was Gus carrying Gary around his shoulders?
"Are you all crazy?" she screamed. Wouldn't someone tell her what was happening. "Cool Breezer?" she pleaded, but all he did was yell and scream. And Gary was unable to talk.
"Doctor!" the lady in white shouted. Why did she want a doctor? She looked too happy to be sick.
And why-and this was what really didn't make any sense at all-why were her father and Mr.Bone ......kissing???"

Now the rest of the part is what I changed:

TEN YEARS LATER!!!

Angeline is now a teacher in a sixth-grade class, a scientist and an astronaut working for the NASA. She was also a very famous musician that can play fifty different instruments. She graduated from university at the age of......guess what......thirteen!
Gary was a famous joke-teller on television and now EVERYONE laughs at his joke, even his old classmates who called him "goon" before!
As for Mr.Bone (Miss Turbone) and Angeline's father, well, they married the day after the accident on Mitchell Beach. His father continued as a garbage collector and Mr. Bone continued as a fifth grade teacher.
Angeline eventually knew what happened to her and why she was in the hospital and why was everyone laughing at a joke which is not funny at all, everyone spoke at the same time, which makes it very confusing and verydifficult to understand.
She skipped the sixth grade when she finished fifth grade with Ms. Turbone and jumped to the eighth grade to skip Mrs. Hardlick and her father thought the seventh grade was too easy for her. She liked her eighth grade teacher whose name is Mr Enlinegna. She is quite happy now, but still, even though she is a teacher, scientist and astronaut now, what she really wanted to be is still a garbage man!