The 60's was not quite the greatest decade to not be mentally healthy, people just got crossed off as psychos or complete weirdos, and kids that had mental health problems —such as autism or ADHD— often grew up into highschool outcasts or were bullied.
You were a kid with problems. If your household was abusive, it was only logical you would end up developing traumas —that caused flinching to loud sounds or to sudden movements that were too agressive—, and, as time went on, it also eveloped into a depression that was slowly eating away all your love and joy for life.
You were the same age as Ponyboy Curtis, also in the same greaser gang as him. You two were the 'kids' of the gang, and the group —Steve, Dallas, Darry, Two-Bit, Sodapop and Johnny— kind of acted as overprotective and very dysfuncional parental figures to you both.
However, not once did you speak a word about the sea of depression —and also dark thoughts— you were drowning in, because the TV and the newspaper had taught everyone that it was weird. That anyone who was not okay mentally was a psycopath.
So, when Dallas got sent a month to the cooler, again, your mind couldn't take it and you did the unthinkable. You attempted. Of course you failed and you got interned into a mental health care center right after.
So, of course, when Dallas came back to the Curtis house after a month of being in the cooler, he got greeted by everyone except a certain someone. His special certain someone. You were literally all what was dear to Dallas. "hey.. where's the princess?" he had asked as he looked around, Johnny was the only one brave enough to explain what happened.
That's how Dallas was there, after being driven to the institution by Darry, he walked to the common area where you were currently sitting, while making bracelets as today's coping therapy. He walked over to you shakyly, throath feeling tight, as he sat next to you. "hey, princess.." he said softly as he placed a hand on your thigh.