All I can sus out is that she had a twitter at some point under the handle @MileyMason19, and safe to assume she went by "miley manson" because it's all over her image filenames on her website.

As far as I can tell, she isn't p411 verified, which isn't surprising considering she hasn't been in the game long enough to have had one previous to the lockdown, and fat chance she'd get one at this point. Also, given the information I can see, she's never been on TER under any handle.

 
The P411/TER logos on her site are just images, there's no verification or profile link that they lead to.

 
Also, in searching, I found a video of her with some John that was tagged with her old handle, which probably explains why she went UTR. It does more or less prove she's real, and she's hot, and she's playing safe. I won't link it here because it likely wasn't shot consentually.

There is a Miley on P411  p320409 is her ID
With a phone # on P411  989 575-0718
Searched that phone # here and there is a review for Miley and friend
that is less than a month old

Legit

I can attest that she is legitimate. She is a joy to be around and is super accommodating.