Prosecutors are charging Brooke Floyd, 21, with one count of manslaughter in connection with the death of her husband and infant son who were found dead in a rural part of the county in July.
The charge is a Class C felony.
Brian Floyd and his 10-month-old son Harper were reported missing on Friday, July 25.
Authorities searched a wooded area south of Blue Mountain Lake, eventually finding Brian Floyd's truck, and then the bodies of the pair a short distance from the truck on July 29.
Brooke Floyd was originally charged with child endangerment and hindering apprehension or prosecution.