INVESTIGATORS SAY THE DOG ALSO SEVERELY WOUNDED. A VETERINARIAN ADVISED THE DOG TO BE EUTHANIZED. >>> A CARY WOMAN GLAD RAIN WAS ALL THEY HAD TO DEAL WITH WHY VISITING HER DAUGHTER IN TENNESSEE LAST MONTH. THAT IS BECAUSE THOUSANDS ACROSS THE DEEP SOUTH WERE DEALING WITH ALL OF THIS DAMAGE LOOK BEHIND BY DEVASTATING TORNADOES FROM MISSISSIPPI ALL THE WAY TO GEORGIA. THAT WAS UNTIL THE NIGHT OF MARCH 27th WHEN WATER FROM THE RAINS BEGAN TO RISE. FORCING LOIS PETERSON, HER PREGNANT DAUGHTER AND FAMILY INCLUDING TWO YOUNG CHILDREN TO ESCAPE IN THE DARKNESS THROUGH THESE FLOODWATERS HERE. THE POWERFUL STORY AHEAD. >> Reporter: AS FLOODWATERS CAREEN DOWN THE STREET AND SURROUNDED THEIR HOME IN NASHVILLE, TENNESSEE LAST MONTH, LOIS PETERSON OF CARY AND HER SON-IN-LAW PLANNED THE FAMILY ESCAPE. >> DO YOU THINK THEY WILL END UP ON THE TABLE? IN THE ATTIC? AT WHAT POINT WILL WE NOT BE RESCUED? >> Reporter: SHE WAS NINE WAS PREGNANT AND GREW UP IN CARY. SHE FLED HER HOME WITH HER HUSBAND, TWO YOUNG CHILDREN AND HER PARENTS WERE VISITING AT THE TIME. >> THAT HE SAYS IT'S TOO LATE. THEN THEY SAID WE HAVE TO GO AND HE SAID IT'S TOO LATE TO TAKE THE CAR . >> Reporter: AT THEY LEFT EVERYTHING BEHIND AND WAITED FOR THE WATER TO SAFETY . >> Reporter: IN THE DITCH, POLLY WENT WAY UP HERE IN THE WATER. I WAS IN WAIST DEEP WATER KIND OF GOING UPSTREAM. >> Reporter: THEY HAD NO IDEA WHAT TO DO NEXT. >> THE BIG TOOL CHEST IN THE BACK OF A PICKUP. IT WENT BY . >> Reporter: THE FAMILY STAYED AT HER OFFICE THAT NIGHT WHERE THEY FOUND TRY CLOTHING. WHEN THEY RETURN TO THEIR HOME THE NEXT DAY, NOTHING WAS DRY. >> EVERYTHING SEEMS WET. EVERYTHING IS WET. THE WHOLE FLOOR. IT'S ALL WET. >> IT'S GETTING BETTER, IT'S JUST REALLY FAST. >> Reporter: A FOOT OF WATER CAME IN THE HOME DESTROYING MOST OF THE BELONGINGS OF THE FAMILY. STUCK I HAVE TO GET ALL YOUR STUFF, OKAY? >> OKAY. >> YOU ARE OKAY . >> Reporter: THEY MUST REBUILD THEIR HOME AND THEIR LIVES WITH A BABY ON THE WAY THERE IS NO TIME TO WAIT. >> IT SEEMS SURREAL. THEN, I THINK AS YOU GO BACK AND THINK ABOUT IT, IT SEEMS SCARIER. YOU KNOW? >> THINK ABOUT WHAT COULD HAVE HAPPENED. >> Reporter: AMANDA LAMB, WRAL NEWS. >> YOU JUST GO INTO SURVIVAL MODE. THEY AND THEIR TWO CHILDREN LOST MOST OF THEIR BELONGINGS IN THE FLIGHT AND HAD TO MOVE OUT OF HER HOME AS IT IS REPAIRED. HARLEY IS DUE ANY DAY NOW BY