Kahls/Sharps Boas

I recently got an Albino Boa as a rescue.
The original owner abandoned her more than a year ago.
Her condition was not so good since she was getting 1 small rat once a month.
I am happy to say she is gaining weight and starting to look good again.
My question is, is there any way to visually tell the difference between the Sharps and Kahl lines?

Thanks.

Not that I know of. If unknown I'd assume Kahl simply because they're more commonly found, but otherwise there's no way to know without breeding her.

Since she's an unknown quantity I'd keep her as a pet.

It's not 100% but most Sharps retain their contrast as they mature while Kahls tend to yellow out. There are exceptions though so...