At four? :O I'm impressed. And a little worried. It seems like a lot of responsibility. Then again, I'm sure I'm biased. Neither my generation (and much less the ones I've been able to observe consciously) had that kind of experience. So I'm sure there's some sort of intergenerational bias at play here.
Still, while it seems like a lot for a little kid, I've always admired your attitude on this, your sense of resilience and grit is something I hope you're proud of, as well you should be.
Of course you're impressed. Sure amn't I very impressive:) I suppose it was good training for navigating the sea of troubles that is life.