I'm wondering if the pentium g4560's igpu is enough for Minecraft and Sims 3? Graphics or fps don't have to be out of this world. It would only be for a 9 year old.
Yes, that should work decently enough for those games.
However if you want a little graphics boost, a Used GPU like the HD 7770 can be found for around $30 to $40 and is a good budget card for light gaming. There's also the GTX 750 Ti and R7 360 which can be found used for around $50 to $60 sometimes. If she doesn't need it atm and would like to save the cash, the iGPU will do fine. Up to you. :)
Yes. It'll do fine.