Bob's BSOD moment is brief, as Alice faked her death and comes back in time to tell Bob to get a hold of himself, bringing Bob back to reality.
Conversely, the BSOD moment triggers a Battle in the Center of the Mind as Bob wrestles with his feelings of worthlessness. Bob comes out of it a changed man and is ready to restart the battle with renewed vigor.
Bob doesn't even so much as blink when Alice dies.
Discussed: "Oh, no... they killed the girlfriend. He's gonna lose it for sure."
Conversed: "Why is it that just one thing always causes the hero to break down. Don't they expect this sort of thing to happen?
Deconstructed: Alice's death shows Bob how powerful Lord Bloodstone is and how he can never hope to defeat him. Bob has lost the will to fight. Alice's death has caused him to view himself as a failure, dragging him into a deep depression ending in Bob's suicide.
Bob has gone through Hell and back fighting Lord Bloodstone, every fight taking its toll on him. This was the final straw and everyone's aware of it.