If she's happy then she's fine.
I often leave Aaron in his bouncer, on his playmat, in his pram or propped up on an armchair. After all, life has to go on and housework has to be done! (Yeah right!

)
It's good for them to exercise their arms and legs and they are learning just by looking around. As long as they get plenty of attention and interaction each day as well, it shouldn't be a problem. They get bored after a while though, so sometimes a change of view might be needed!
So no, I don't think you're being uncaring at all!
