In a couple of weeks I'll be adding a new baby rat to the cage of my lone rat, Minch (single because her cage mate recently passed away). Minch is just over a year old, and not the type of rat who is comfortable with human handling at all. She has bit me twice, and still shies away from my hand. I suspect there is little way to curb this behavior, as it seems to be etched into her personality.

But what I was really wondering....
... if she's grumpy with human attention, and obviously strictly territorial, how will she cope with a new baby? Please, tell me how to make an introduction as best/peaceful as possible: where should they meet? Should I prepare Minch (current rat) in any way? How should I arrange the cage, so that once they are both in there Minch doesn't hog her box and keep the little one from entering?
Any personal experiences would be great!
