Googled: Abuse laws in 1920s America, adoption in 1920s Mississippi, adoption in 1920s America, and looked up "sexual abuse" and "abuse" on Wikipedia.
1) I got a little information about this. Would an abusive father be jailed in 1920s Mississippi?
2) Upon the mother remarrying, how easily would the stepfather be adopt to his stepson?
3) Can the little boy's last name be changed fast to match his stepfather's?