I wonder if the Jack ran in first, trying to get away form the pits, and after they were finished with him they attacked the woman.
Romeo was probably running for his life and headed straight for his 'mommy'. Once there, he probably made his 'last stand' which triggered the attack. The owner of these dogs is in serious sh*t.
Also, having met a few pit bull owners, all I can say is: on a socio-economic scale-- they leave a lot to be desired.