Gesh, that really sucks.
I'd probably install a little camera and hook it up the your computer so it can record what happens outside.
That's a big investment and it needs protection eh!

I can't see them knowing that it was 100% Het Albino unless you had it marked.
They just look like a normal do they not?

Anyway best of luck and I hope you find her!!! Poor girl must miss you all ready!