By the time Ariel arrived at the lab, it just 3 hours 59 minutes left.
"I need you to help me in mixing some things Leo, don't worry I'll direct you." Ariel said immediately putting on her goggles, coat and gloves.
"What the hell is going on?" Leo questioned as he followed after her putting them on.
"Someone sat on the poison I set for Vincent, I went home to get the antidote but it wasn't there." Ariel said and paused looking at the timer she had set, "and now we have 3 hours and 57 minutes to make an antidote." Ariel explained, immediately pouring everything she bought on the slab ready for action.
"Bring me, that, this and this, while you mix those two." Ariel instructed pointing out to all the ingredients, while Leo followed her instructions diligently watching her struggle to make the antidote quickly.
Honestly he didn't care if some lowlife died or not, he didn't even know the person why then should he feel pity for her?