In my opinion, they're the same person. The middle initial of L. for Salina could indicate that Luvicie is her middle name. In the 1900 census she states that she's been married for 30 years, gave birth to 11 children, with 8 still living.
I did a search for her death certificate and found this:
Luevina Walker Raney died 11/5/1955 in Rapides Parish at the age of 66. Unless the age is wrong this can't be her, but the name sure intrigued me.