Well, that's good. I had access to the money my dad left me too It should be enough for the short-term, at least, and then you two can figure something out long-term in case your stepmom doesn't come back.
You can draw really well, maybe you could try selling your drawings? People would I'll try to check around and see if there are any jobs. Other people here might know where you can find work, too. If you wanted to ask. They wouldn't have to know the specifics, and really, looking for a job isn't so out of the ordinary.