Yeee....and your friend wants to be a vet? o.O You poor thing, that's not what you needed to come home to after all that at all. Deep breath, chocolate, and lots of wine, sounds like your BP is going to be fine....and I wouldn't blame her if she nips your friend on the nose after all this!
I wouldn't worry about the ants, any transplants you got are not going to be breeders, so what you have is what you've got. The traps idea isn't a bad one, just to catch some random stragglers, but they should be gone soon.