ok, so I was playing dance to get more star fo a Makiko, but I don't think it's good that she weighs 2 pounds! And she's a teen! Is she going to die? I hope not.
I've seen a lot of posts like this. When your tama reaches its lowest possible weight, it will refuse to play any more games. If it's an Ichigotchi, it can weigh almost nothing. If you are for nay reason uncomfortable with your tama's weight, feed her some snacks. She'll be fine, though. She won't die from being underweight.
It is quite normal with an Ichigotchi, yes, but I pesonally think it is a glitch. It didn't happen to though, although I always fed it loads so that's probably why...