Quickest way to prove mother's citizenship for citizenship by descent application?

My mother lost her passport when her parents passed away, these are the documents I do have:

Documents I do have:

1. My U.S. birth certificate — apostilled & notarized copy — 1 page, English
2. Mother's U.S. marriage certificate — apostilled certified copy — 1 page, English
3. Mother's U.S. naturalization certificate — USCIS certified & notarized copy — 1 page, English
4. My U.S. passport — notarized copy — 1 page, English
5. Mother's Polish birth certificate — original — 1 page (front & back), Polish
6. Mother's Polish baptismal certificate — notarized copy, Polish (bonus)
7. Grandmother Danuta's Polish baptismal certificate — notarized copy, Polish

I have more on some GGGM/GGGF

GGM (Polish GF’s Side):

• Date, place of birth: 1/24/1902, Azarka, Poland
• Date married: 8/6/1922, Dokszyce, Poland
• Citizenship of spouse: POLISH
• Occupation: Unknown
• Date, place of death: 6/9/1990

GGF (Polish GF’s Side):

• Date, place of birth: 2/28/1901, Poland
• Date married: 8/6/1922, Dokszyce, Poland
• Citizenship of spouse: POLISH
• Occupation: Unknown
• Date, place of death: 2/20/1988, USA

GGM (Polish GM’s Side):

• Sex: Female
• Date, place of birth: 6/15/1906
• Date married: 9/10/1960
• Citizenship of spouse: POLISH
• Occupation: Seamstress
• Date, place of death: 1947, Warsaw, Poland

GGF (Polish GF’s Side):

I have name, we may have more of this - we have military photos etc. May not be necessary for me to investigate?

• Sex: Male
• Date, place of birth: 11/7/1900, Warsaw
• Date married: 9/10/1960 Worth Valley, England
• Citizenship of spouse: POLISH
• Occupation: Engineer
• Allegiance and dates of military service: Polish army, unsure on exact dates
• Date, place of death: Dachau, 5/23/42?-~2/1944

Grandmother:

• Sex: Female
• Date, place of birth: Warsaw, Poland, 4/27/1930
• Date married: 6/15/1958
• Citizenship of spouse: POLISH
• Occupation: Cleaner in U.S.
• Date, destination for emigration: 3/9/1961, NYC, USA
• Date naturalized: Unknown
• Date, place of death: USA, 7/9/2012

Grandfather: 

• Sex: Male
• Date, place of birth: Vilnius, Poland, 5/22/1925
• Date married: 6/15/1958
• Citizenship of spouse: POLISH
• Occupation: Engineer in Poland, Banker in U.S.
• Allegiance and dates of military service: Polish Army during WWII, not sure of full dates, but 1939 was one battle.
• Date, destination for emigration: 3/9/1961, NYC, USA
• Date naturalized: Unknown
• Date, place of death: USA, 1/22/2017

Parent (Mother):

• Sex: Female
• Date, place of birth: Warsaw, Poland, 9/13/1959
• Date married: 5/18/1985
• Date, destination for emigration: 3/9/1961, NYC, USA
• Date naturalized: 4/24/1985

You: 

• Date, place of birth: 12/17/1989, USA