Annie - mold can kill given certain variables. It can definitely harm people and can have long-lasting effects even if it does not kill - again, research the varieties and other variables. Can be a scary subject. Research it well and hope this helps. Cheers!
I have not been through the home you mention but, to answer your question, yes, mold can kill someone, but the incidence is extremely rare. there are hundreds of types of mold and only a handful are toxic. While the health effects of mold shouldn't be ignored, most mold can be effectively mitigated.