Follow your heart, Steph. I've noticed God doesn't like us using our "brains" very often. He seems to REALLY be interested in leading us with our hearts and the Holy Spirit.
If, in your heart, you are led to get a job to help your mom, do it! Our sweet Father in Heaven, watches over us and corrects any mistakes or wrong decisions of our hearts.
All is well with your dad. God has him and you, too! You are loved!