This is a respectable method.... does anyone else remember the days when you did chores and didnt get paid? Thats what a weekend / evening job is for. But at least this young lady is working for what she wants, learning to budget, and putting the animals as priority.
OP, your best bet as a 16 year old trying to make money is to get a job. Its not that painful an experience, you'll expand your horizons, and help motivate you to better things. Thats what minimum wage jobs are, a starting point. Who knows, you may also be able to afford another reptile or improve an enclosure.
Find something that interests you and get a job that fits that. Video games? GameStop. New Era hats? Go work at one of their stores. Etc. Etc. Lots of opportunity.