Hi Katie,
Finding schwere Flak-Abteilungen und -Batterien that had Flakwaffenhelferinnen assigned is no easy matter, even for someone with a very big library like me. So, early this morning, I turned to my last remaining source that I previously avoided because it takes hours and hours to go through it.
The search ended successfully and here is a list matching names with units. Out of some 20,000 male and female Flak MIA listings appearing in about 2,000 pages of material, this is the best I can do. As you probably know, when things got really dangerous, the male Flak soldiers sought to protect the female Flak soldiers by trying to get them out of harm’s way. Consequently, they suffered far, far fewer casualties on a per capita basis than did the males. Since you are not interested in the Flakscheinwerfer (searchlight) ladies, you are left with schw.Flak-Abt. 306, the two Heimat-Flak options and the Breslau, Hamburg and Altenstadt options. The number in parentheses following each listing is what they looked like on a scale of 1 to 10 (a male prerogative -

).
Each name is followed by date and place of birth, rank and where they were last seen and the date.
Flakscheinw.Abt. 128:
OLDEN, Elisabeth, 11.12.26 in Ostpreußen, rank unk., MIA in Berlin 03.45. (2)
Flakscheinw.Abt. 150:
SUTTKUS, Emma, 15.5.26 in Ostpreußen, rank unk., MIA in Wien 10.44. (6)
Flakscheinw.Abt. 179:
ZAGULA, Gerda, 12.2.23 in Berlin, Flakhelferin, MIA in Kassel 03.45. (6)
Flakscheinw.Abt. 370:
SCHMIED, Marie, 1.11.25 in Czech., Flakhelferin, MIA in Potsdam 03.45. (9)
schw.Flak-Abt. 306:
ESER, Liselotte, 18.9.23 in Ennigloh, Flakhelferin, MIA in Germany 03.45. (1)
Flakscheinw.Abt. 410:
KLOMBERG, Gisela, 11.9.26 in Duisburg, Flakhelferin, MIA in Pasewalk 02.45. (8)
Flakscheinw.Abt. 448:
5 listed.
Flakscheinw.Abt. 470:
2 listed.
Flakscheinw.Abt. 528:
2 listed.
Flakscheinw.Abt. 808:
4 listed.
schw.Heimat-Flak-Battr. 269/VIII (Breslau):
OTTENBREIT, Käthe, 1.7.22 in Bielitz O/S, Flakhelferin, MIA in Breslau 01.45. (7)
le.Heimat-Flak-Battr. 31/XVII (Wiener-Neustadt):
CHOMRAK, Anni, 26.10.29 in Czech., Flakhelferin, MIA 05.45 in Wiener-Neustadt. (unk.)
Flak-Ers.Abt. 36:
1 listed.
Flak-Ers.Abt. 62:
2 listed.
Flak-Ers.Abt. 277:
1 listed.
Flakturm Berlin-Zoo:
KRAFT, Irene, 10.12.26 in Berlin, Arbeitsmaid, MIA 04.45 in Berlin. (6)
Flak Breslau:
LEUSCHNER, Elisabeth, 18.12.28 in Gloschkau/Schl., Flakhelferin, MIA in Breslau 03.45. (5)
Flak Hamburg:
VOIGT, Dora, 24.4.15 in Berlin, Flakhelferin, MIA in Hamburg 1945. (unk.)
Flakartillerieschule IV Altenstadt/Schongau:
OTTO, Elsbeth, 18.2.21 in Zanow/Pom., Flakhelferin, MIA in Altenstadt 04.45. (8)
[
Source: Deutschen Roten Kreuz – Suchdienst München],
Vermisstenbildlisten des Deutschen Roten Kreuzes, 173 Bde (München, 1960’s)].
Larry