I'm not an expert on ball python morphs but I know genetics. If you have a normal and albino (I'm guessing) and they have nothing else in terms of special genes you're going to get all babies that look normal but are heterozygous for albino.
If your normal happened to be heterozygous for albino (and it could be - visually the het for albino doesn't show) then you'll get 50% albino babies and 50% normals that are get albino.
Hope that's helpful!
Ty