@mydogisthebest
The leaderboard:
Faye - 40 (6)
Ashley - 38 (5)
Stacey - 38 (5)
Joe - 36 (4)
Lauren - 35 (3)
Charles - 35 (3)
There were two ties, which meant the leaderboard could easily have been turned on its head. We can assume Ashley came last with the public, giving her a score of 1 + 5 (from judges) = 6.
For Lauren to have been saved, she had to have beaten Ashley's overall scored AT LEAST 6 overall. She already had 3 points, so she needed to score at least 3 from public.
Hypotthetically, the scores could be this (judges and viewers):
Joe - 4 + 6 = 10
Stacey - 5 + 5 = 10
Faye - 6 + 3 = 9
Lauren - 3 + 4 = 7
Ashley - 5 + 1 = 6
Charles - 3 + 2 = 5