Yeah looks like Myah has plagiocephaly and possibly torticollis to my untrained eye. The plagiocephaly is obvious though. I could be completely wrong about the torticollis. Obviously, I'm no expert lol.
I can definitely see the tilt of Myah's head. Lily's looks a little different, though. Lily's jaw line is a little bit lopsided, like she has more baby fat on one side than the other. It was especially noticeable when she was brand new. Im not doubting you or anything, just letting you know how it presented in Lily. Maybe take her to another pedi for a second opinion from her original pedi.
Here is a PDF showing the exact same exercises and stretches we do with Lily as recommended by her PT. I would wait until you talk to a pediatric PT before you start them with Myah, as doing so if they are unneeded can cause more harm than good. Only a PT can properly diagnose Myah's issue with the tilt.
http://plagiocephalyawareness.org/ar...stretching.pdf