Everything happens for a reason. I am glad you took this decision and I am touched to hear how considerate you are of your father!
That can't be easy since cancer is tough on every family member and everyone has to give up a lot during the period where the cancer torments the family.
Thank you for making such a wise and caring decision, I am sure you won't regret it. And the right puppy is out there for you. Not born yet, but waiting at rainbow bridge to be born into your arms
