I'm sorry to hear that! I've seen a couple people mention that with Sampo, and I can confirm that wasn't the intention with her and she is 100% meant to be a short adult woman. Honestly, she isn't even that short and she's only petite by anime standards, she's meant to be 5'1" with a B cup.
As for the goblins, I was afraid people would see them that way given that they're small and unintelligent, which is why I made their hips twice the size of their shoulders to try and make it clear that they weren't young.
Also, please don't negatively discuss other games here.