Ladies ffm

Need opinions from the ladies on ffm. My wife has been using nasal pillows but can't stop air from coming out of her mouth. Even with a chin strap it still comes out. We are going tomorrow to look at ffm for her. Any good suggestions on good ones and ones to stay away from

What's good for one maybe bad for others and vice versa. Even a photo of someone can't really say much about bone structure let alone personal quirks in taste and comfort. What's really important is to try them on lying down because your face changes a lot then and it can make a very big difference in fit, and how e.g. parts of your face fall away from parts of the seal when you turn your head, etc. Bring your own pillow!

And try to relax your face like you're sleeping!