I agree with the other girls about letting it go then and no, that doesn't make you a bad doggie mom!
As for how to incorporate it, I really like the idea of you and Carrie doing 'Pawesome Thursday' or whatever. Cool idea! You are doing such a great job with Berrie Sweet that it is hard to be spread too thin. Not to worry. Leave a cool looking post on Ruff Ruff directing them back to Berrie and tell them what you have planned. Then make an exciting launch of it and you will be all the better for it!