I don't find any marriage records on-line, however, Eva, still single, is listed with her parents in the 1905 census. You might want to inquire directly to the Bridgeton, NJ Town Clerk to see if a marriage was recorded there between 1905 and 1907.
New Jersey, State Census, 1905 Cumberland, NJ
Citing this Record: "New Jersey, State Census, 1905," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KMW8-BQ9
Samuel Kell M 36
Alace Kell F 34
Eva Kell F 17
Ethel Kell F 9
U S Census, 1900 Bridgeton city Ward 5, Cumberland, NJ
Citing this Record: "United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M9NT-124
Head Samuel Kell M 33 NJ
Wife Alace Kell F 29 NJ
Dau Eva M Kell F 13 NJ
Dau Ethel Kell F 5 NJ
Son Raymond Kell M 0 NJ