Yes, it is not safe to swaddle if LO can roll. She needs to be able to move her body to roll herself back or push on her arms if she ends up on her tummy or there is a SIDS risk.
If you find swaddling for getting her off to sleep helps you could initially swaddle and once she's asleep remove the swaddle within a few mins of falling to sleep. Or for instance a cotton sheet tucked across her arms and body and tucked firmly under her so she feels the containment like a swaddle, and then remove this after she is asleep (to prevent it lifting over her face/head).
