Thank you all for your replies and warm wishes, they mean so much to me and have really been a source of comfort.
I am sitting here waiting for the vets to call.I can't wait and yet I dread it..
This is incredibly hard.
Last night I went searching for additional info on the former owners and found their facebook (I'm not on facebook) but anywho I found it and It reassured me of what I already knew..they had no clue, they had dozens of pics of themselves with the litter of pups at various stages throughout their 10 weeks, it was obvious they fell in love with them. These pics were in no way meant for selling purposes. They talked about how much they miss them etc....so sad, I'm going to hate to inform them.
I did not hear from anyone who had a pup/dog with both a murmur and arythmia..so I'm still perplexed at what that means.
I'm asking everyone to keep Ms. Mia and Bella in their thoughts and prayers today as we await their fate...Thank you