She obviously has pinto markings and if she has the mottling then she carries an app gene (just may not be the one for visible pattern) therefore she is a pintaloosa.. Since she does have mottling she could very well color up appy in the future
I cannot see any Appy characteristics whatsoever.If you want to call her a Pintaloosa, that's fine, but crossing a Pinto with an Appy does not give you a Pintaloosa.