Eligible for texas hardship license?

i an going to turn 15 on the 14th of june and i want to know if i could get oe. i am one of 7 children and my older sister doesn't know how to drive if her life counted on it. my dad doesn't get home till midnight, and my mother cant drive me anywhere because shes busy with the two sets of twins we have. i learned how to drive when i was 12 and im in charge in cases of emergency since my dad's never home. I also need to get a job because my father doesn't give money to my mother so i denie all the money that my mother offers me to help her pay for the other children.