Wow, I've actually wanted to make a game similar to this! This is really cool. Though it would be nice if you could give the giantess something to eat. You can't seem to access your inventory when you are in the close up.
Some more interactions with the little people would also be pretty cool. Maybe helping them with issues with their village? Sowing crops, fishing or maybe defending them from smaller predators? Anyway, it's still really fun.