A six week old border collie puppy is living in your back yard???????????

What type of and how much socialization and training is this pup getting?

Bringing in an active puppy can very hard on an older dog who is not used to puppy enthusiasm. As Love That Collie said, they should be introduced in a controlled situation when the puppy is pretty much played out and not being such a livewire.

If the older dog has never been exposed to puppies before now, you're going to have your work cut out for you. If she will not correct the puppy herself, you'll need to do it for her in order to keep her from becoming too stressed out. The longer you keep them seperated the more difficult the task will become!