Why not consider paying for the past equipment, course and anything else out of the "Profits" once you have made some. Your loan is a start up cost isn't it?
I agree with the others that having your own bank account for your business is important. It's not going to work otherwise if you mix business and family money.
Did you plan on being a photographer in a partnership? If you want to work for yourself, just as yourself, you'll need to have a different arrangement, and may need to consider not sharing all the information with someone else who does not have the best interests of your business or yourself at heart.