I'd say leave her alone in her enclosure for a week, then attempt to feed her, and then let her be for another week or so. You can then take her out for very short handling sessions (no roaming. And maybe just 10 minutes) a few times a week and see how she reacts. She is probably very stressed out right now. She also could be hungry. Did you get any history (feeding, temperament, etc.) from her previous owner?

I don't think albinos have poorer eyesight . I also highly doubt that the other snake is making her aggressive (they are in seperate enclosures, correct?). I've heard of snakes behaving differently during breeding season, but I've never experienced this first hand. You also might want the other snake sexed. At 4.5 feet, it's probably a female, but that's not a 100%.