natali castellanos-tyler , 30 , married mother of three from virginia , was killed when she crashed into tree february 21 .
daughter elisa , now 3 , was in backseat of tyler 's ford explorer and survived crash .
police ruled that it was a one-car collision caused by sleek road .
craig tyler , victim 's husband , says little elisa has been having recurring dream featuring a white van at crash scene .
white box truck has been tentatively linked to three hit-and-run incidents in neighboring communities between march 29 and april 3 .
each time , truck side-swiped passing vehicle and sped off ; april 3 crash involved a school bus filled with students .