I would discourage breeding her to a Spider. Since it is a pattern mutation, and in particular one that reduces the pattern, I don't know if you would get a good visual or a good idea of what kind of potential it may have with that cross. Pastel is a good idea, though!
Also, with the Het Albino, I wouldn't expect to get anything from that gene, and wouldn't recommend breeding to that either if your looking for a reaction with your girl. The T-Negative gene has been proven many times over to be specific to itself, and the Het-Form has been proven over to not be visual. If you just wanted to see what she did to a normal than it's a fine way to go, but simple genetics say you pretty much won't get anything from the Het Albino, and all your babies would only be Possible Hets in the long run. Besides, the Albino Gene is meant to blank out color and replace it, so it'll remove any potential your girl may have and turn it into the simple white of the Albino (rather than see what it can do). It would be like the Pastel Albino, IMO, where you can barely tell it has Pastel in it, because the Albino takes that away and turns it white.
Just my two cents and just speculating with you! Hope it wasn't too confusing!
The Pastel is a good idea, for realz, though.
