When a child is 6 and older and large enough they can use an adult seat belt.

Not in all cases, and children under 13 should remain in the back seat. 

Ineed the answer for the same quastion /:  

Obviously she is under-stress and needs to cool down. she needs to slow down and take a break from her job, not completely, but ask for shorter hours until she finds enough time to study, pass, and work. if she can't get shorter hours, she can try making a day or two to study. she can work full time and get minimum wage but minimum wage can only get you so far in life.