. >> reporter: jasmine caldwell reports four kcen tv on fort hood. >> it has 214,000 acres.'s about 65,000 soldiers, roughly. so it's a very, very large place. >> reporter: myra agonized. the place was so large, her sister could be forgotten easily. and she didn't like what she heard when she spoke with one of vanessa staff sergeants. >> he wasn't able to tell me anything. that made me even more upset. >> reporter: too upset to sit home and wait. >> you had to fourth could? so you needed answers? >> right. >> reporter: myra says she was surprised by the reception she got the gate. >> what did they tell you? >> they tried to ask me if i knew anything. i'm like, if i knew anything, i wouldn't be standing here. >> so this is a mystery? what happened to your sister? no one knows anything? >> everyone claims that they just didn't know. >> reporter: army investigators did tell the family one terrifying thing. >> everything was their, her car, her keys, credit, debit card, ideas self. her military i. d.. she would never leave without it. >> that is extremely bizarre, that she is go