This is really pretty unheard of.
Every now and then a baby will just... fetch up somewhere. It's suspected they're typically from parents who didn't have a credit, or maybe from parents under sufficiently disastrous circumstances that one will be rid of the baby to keep the other parent from it, or even smuggled out of Tapa. No one needs to be more incentivized to keep their baby, so the official response is caste them by hair and put them up for adoption.
This one's blue and that's unheard of.
She's also a little old for a baby - maybe a very small one year old, or a southern hemisphere kid? They put her down as being one when she wakes up and can talk fluently with an accent nobody can place.
She can't remember where she came from or who abandoned her. They put her up for adoption.