Well I guess a twist revelation could be the case, but the police lady did say to MC she will kill every criminals in that warehouse.Its not unheard of within storytelling or movies etc for it to be initially believed and even witnessed someone died, to later find out they in fact survived.
So even if the eye witnesses only saw Ling & Ivana got shot at the shoulders or something & just assumed they're dead (even though it wasn't a fatal wound). I'm highly positive the police lady will finish the job & made sure they're dead.