jeff lapoint didn't know for sure what was making brigita sick but symptoms indicated may have been exposedtoxic chemicals and realized she might not be the only one. >> let's observe the children and that they haven't been exposed. >> he had her husband and son admitted to a separate hospital for testing and for safety sake banned all visitors from her hospital room, even immediately family. >> there was a time you didn't know what was happening with your sister. did you think this is. she might be gone already and nobody's telling us. oh. >> oh, yeah. i was like a walking zombie just going through the motions and hoping she's okay. knowing if they hadn't called me to tell me she's gone it's because she's still here. >> olga is two year younger and they've always been close. >> we shared a bedroom when we were little and every night was like a sleep over. we were literally there for each other throughout our childhood, teenage years, adult life, she was my go-to person. >> their dad worked at u.s. customs at the border and grew up in rural san diego county. >> it is a safe, idyllic upbring