re: is it ok

As long as you don't have any blankets up near her head or as long as she isn't sitting up so high that it makes her head falls forward, she'll be fine. They only sleep for a couple of hours at a time in the beginning anyway so it doesn't really make much of a difference where they sleep.

My boys hated the swing when they were babies, so i always used a vibrating chair for their naps and stuff. It was easier to keep an eye on them that way if i left the room to do dishes or something like that.