A stepparent is a person who becomes a parent to one's child through marriage or remarriage, but does not have a biological relationship with that child.
Post-placement portions of adoption evaluations, and combined pre - and post-placement evaluations (initiated after a child is already residing in the home, such as in stepparent adoptions), are done by court appointment only. (texascounseling.org)
This requirement is often waived for stepparent adoptions because the child is already in the legal custody of one biological parent but check with the court to be sure. (thespruce.com)
The only exception is in stepparent adoption of the child. (divorcesource.com)