Thanks everybody for all your nice comments! I love her, too!! :D
Crikit - Yes, I will try to find someone around here who knows about dogs herding sheep... it shouldn't be too hard, because there are a lot of sheep! LOL I will also definitely try introducing my dogs on neutral territory, I don't think there's any other way to do it!
Primabella - I honestly don't know if she is a mini or standard... I will take her to the vet's tomorrow to determine her age, and from there will see if she's going to grow any more! If she's already full grown, then she is on the small side, so I'd guess a mini.
mel55smiles - I will be sure to have both dogs on leash when they meet. :)
Aspen and Misty - Thanks for your help! I appreciate it!! :D
Karen - I have definitely done my research, and I know that Aussies need a job to do, they are not happy just hanging around the house. We got Porshia so that she can herd the sheep, and I really look forward to learning with her! I'm not afraid to invest the money in finding a good trainer - I know it will all pay off in the end!! As far as whether she is a "natural" or not... I honestly don't know yet, but I can't wait to find out!! Thanks!! :D :D