I have two suggestions for this girl, neither which have black hair.
That being said, it has not been unheard of that post-kidnapping, appearances of children have been altered to hide them, or make them less recognizable.
So number 1:
Serenity Dennard
The National Missing and Unidentified Persons System (NamUs)
View attachment 286360
Went missing at age 9, she would now be 11.
Height at the time: 4'7''
Went missing from: Rapid City, South Dakota
Although she has straight hair, it is long. It could be dyed black. She also has a nose similar to the Jane Doe, and fairly strong brows. Similar to Doe. Her left tooth also appears shorter (chipped?) similar to the artist rendition.
Serenity's circumstanes are quite sad and summed up with the following short statement:
"Serenity Dennard was last seen leaving the Black Hills Children's Home on South Rockerville Road on Feburary 3, 2019. She may be trying to locate and return to her family."
Second suggestion is:
Hannah Paige Goodman
The National Missing and Unidentified Persons System (NamUs)
View attachment 286361
Kidnapped by her mother who was heading towards California (allegedly). Alongside 3 siblings. All siblings have the same nose.
Height: 3'8''to 4'0''
Age: Went missing at age 5, she would now be 6.
Like the girl above, her left tooth appears shorter than the right one.
View attachment 286364