Put newborn on back to sleep, rolls over to her side?

Emma

Just like I said, I lay this girl down on her back, and she’ll roll over and sleep on her side instead.

Is this okay? Can she breathe? She can of course roll back over to her back, she’s just propped on one side- but I’m terrified of sids and I don’t think it’s safe- but it’s hard to stop her. Every time I correct her, she either rolls right back to her side, or wakes up and abandons sleep all together.

Help!