You expertly stab one of the creepy crawlies, but it is too late for Aretta. She slumps over, barely breathing anymore, but manages to stab one last spider before losing consciousness
Spoiler
Aretta tries for one last attack:
(1d20)[19]+2 (1d4)[4]+1
Remaining spiders:
(1d20)[10]+7
(1d20)[3]+7