That is great news about Alex. Just remind that training is an ongoing process. The more time and effort put into the greater the return. I have a 1year old Golden Retriever that I have been training since I got her at 13 weeks old and she is still not a fully trained dog, is she better than when I got her yes, better than a month ago yes, but I do some sort of training every single day. It can be as simple as sitting for food or and complex as learning the weave poles for agility.

Great job with Alex. What are your training plans for tomorrow?
Does Alex have a Kong to keep her busy and entertained?