Wow, that´s a load of content for a jam game :O
I like the idea of your game but I think it can be a bit repetitive.
The hard levels were a bit confusing as there were some lines that didn´t really match up with how you would draw a family tree normally and redoing everything after submitting a wrong answer was a bit annoying. Maybe make the player have 3 tries (one for every star) instead of getting a penalty for every wrong placement. That could allow for smoother gameplay as they don´t have to restart the level every time they get something wrong.
Keep up the good work (maybe next time even without AI ;) )!