Sarah's Request: 
Kasim; Roll: 7 Pass
Naream: Roll: 5 Pass
Eins Numgrud: Roll: 11 Pass
Andrea: Roll: 15 Pass

All passed the DC of the trap, Andrea by a massive amount, Naream barely. As such modifiers weren't needed to be factored in :p

Carnival of Chaos: 
Tristan Whitemarch: Roll: Dc15; Roll 6; Fails.
Cristoff Whitemarch: Roll : Dc15; Roll 2; Fails hard.
Aneura: Roll: Dc15; Roll 9; Fails.

Even with their bonuses applied, nobody passed that test.