The Girl In Green

There's a girl out there, on the internet who is doing what she loves, without a worry.
That girl is the younger sister of Markiplier.
When she was born, she was tiny. It was very unlikely for her to survive, so after a few days her parents and brothers said goodbye and she was given to a family who could afford her medical bills and have a safe and healthy environment for her to grow up in.
Eight years had passed before she knew her biological family. When she and Mark met, they quickly became close. She stayed with her other family, as her health was still shaky and they were fixing her. She loved them too much, and her friends, to just up and leave.
Seven more years go by, and she is a Sophomore in High School. As an outcast, she creates her youtube channel; Viridescent. The name comes from the meaning, becoming green. To her, green meant healthy.
Three more years and she's graduating High School.
Two more, and she has found him.
The boy who saved her.