Hi. I have 2 chihuahuas. Lucy 12 yrs and Pickle 8 months. We are getting another chihuahua pup next week to kind of give Lucy a break and give Pickle a more active playmate. This past week Pickle’s breeder contacted me with an offer of Pickle’ s half sister. My husband says to go ahead but I don’t know. Am I crazy to have 4 chis? Pickle’s sister is 6 months. Thanks! ????