As you didn't give any clues to anyone's parents, DOB or place of birth, just guessing here.
If I'm reading your query correct, Louise could be the daughter of the 2 male siblings, assuming I have the right family of course & assuming they (parents) had no other kids.Evidently one of these boys named their daughter after their mother.Not seeing parents, Oliver & Louise, in the 1930 census.
1920 United States Federal Census Record about Oscar Green Name: Oscar Green [Oscar Brun] Home in 1920: Salineville, Columbiana, Ohio Age: 5 years Estimated Birth Year: abt 1915 BirthPlace: Ohio Relation to Head of House: Son Father's name: Oliver J Father's Birth Place: Pennsylvania Mother's name: Louise Mother's Birth Place: Ohio Marital status: Single Race: White Sex: Male Image: 582 Household Members: Name Age Oliver J Green 45, head, b PA, father b PA, mother b OH Louise Green 43, wife, b OH, parents b OH Hattie O Green 18, daughter, b OH Audrey L Green 15, daughter, b OH Elda O Green 13, daughter, b OH Lluayn Green 8, son, b WV Oscar Green 5, son, b OH
1910 United States Federal Census Record about Oliver Green Name: Oliver Green Age in 1910: 35 Estimated Birth Year: abt 1875 BirthPlace: Pennsylvania Relation to Head of House: Head Father's Birth Place: Pennsylvania Mother's Birth Place: Ohio Spouses's Name: Louise Home in 1910: Yellow Creek, Columbiana, Ohio Marital Status: Married Race: White Gender: Male Household Members: Name Age Oliver Green 35 Louise Green 32 Hattie O Green 9 Anddery L Green 6 Elda O Green 4
Hope this helps.Maybe you could post a query on the Green surname page for a Louise, daughter of either Lluayn or Oscar Green?