Only at 2 in the morning, can Dick get his older sister up. Dick crawls up to his sister's, Addy's bed and slowly peels back her eye lids, one at a time. The he asked the same question every night.
"Are you awake?"
And Addy would always roll over and shrug him off. But if he was patient, she would roll off of the bunk bed, grab her fleece blanket and sneak outside with her little brother following in her wake.
They would slowly closed the front door , they never figured out that their parents from down the hall could hear them every time Dick woke her up. They heard them sneaking out, shutting the door, and walking off to their favorite spot.

Dick was 8 this time. Addy and Dick had a connection. A brother-sister bond that was like no other. That connection made it almost impossible for Addy to leave.
"Don't worry Dick, it was just a nightmare. The monsters can't hurt you." Then she would always sing a line from her favorite musical " 'Nothing gonna harm you/ Not while I'm around/Nothing gonna harm you no sir/ Not while I'm around/ Demons are hiding everywhere now and days/I'll send 'em hollowing/ I don't care/ I've got ways'"
"Addy, can you sing the other song please?" Dick would always ask.
"Sure. 'Listen children to a story that was written long ago/ about a kingdom on a mountain/ and the valley far bellow/ on the mountain was a treasure/ buried deep within the stone/ and the valley people swore they'd have it for they're very own.
"So go ahead hate your neighbor/ go ahead cheat a friend/ do it in the name of heaven/ you'll be justified in the end/there won't be any trumpets blowing come the judgment day/ but on the bloody morning after…/ one tin soldier rides away
"So the people of the valley sent a message up the hill/ asking for that buried treasure/ tons of gold for which they'd kill/ Came an answer from the kingdom/ with our brothers we will share/ all the secrets of our mountain/ all the riches buried there/
"So the valley cried with anger/ 'Mount your horses!/Draw your swords!'/ and they killed them mountain people so they won they're just reward/They turned the stone and looked beneath it/ Peace on earth was all it said.
"So go ahead hate your neighbor/ go ahead cheat a friend/ do it in the name of heaven/ you'll be justified in the end/there won't be any trumpets blowing come the judgment day/ but on the bloody morning after…/ one tin soldier rides away"

Dick was 8-years-old. When he moved in with Bruce Wayne. When Bruce became the father Dick needed. While Addy had no one. She had her Aunt. But who Addy needed most, was a father too. Someone to tell her everything was going to be okay. Someone to promise her that she would be taken care of, and nothing could ever harm her again.

And she didn't get it.

Her brother did. The spoiled little brother who got everything he always wanted, did. He got the father. He got the richest man in Gotham. He got the family, the love, the promise, the faith, he got someone to believe in.

She didn't.

And she was so bitter about it.

So Addy left. Never to be hear from again. He was 10-years-old. Crawling out of the giant bed that was now his, stumbling to the phone he call the house phone to where Addy was staying. He knew that they had the same nightmares. She was always there for him then. So why wouldn't she be now?

At least that's what he thought until their Aunt picked up the phone after the first ring
"Addy? Is that you? Please come home!"
"This is Dick. Where's Addy, I really need to talk to her." Dick demanded in a shaky voice.
"Oh Dick, Addy… she's gone. I heard crying earlier tonight so I left her alone. Then when I went to check on her again, she was gone. She disappeared into the night." His Aunt cried between tears.

Dick couldn't believe what he was hearing. He dropped the phone and ran into his room. Diving under his covers, he tried to go to sleep, praying that he would wake up and Addy would be there. Happily taking his nightmare in stride, providing reassurance and advice. Her not being there was just… unheard of.
Addy said she would always be there.

And now she wasn't.

Addy looked behind her as the car drove off. She had her backpack of clothes on her back and nothing else. She didn't know where she going, or who she would become.
Nobody did.