Boost My Blog Hop "Bad Dog"

Yay!!! Friday Blog Hop :) I'm all up for new friends

So a few days ago there was an incident with Cookie and Mr. P's aunt. We were visiting at grandma's house and took the dogs. Cookie is our baby and always just so happy to do anything that doesn't involve her crate. We were all on the back porch when the front door opened and Cookie took off barking. Grandpa got up to see who was there and Cookie came back to the porch, ears back, tail between her legs and very submissive. His aunt refused to come back in the house. Cookie had bit his aunt! Not hard, but enough to puncture the skin.
Cookie is the sweetest dog and is never mean, but can be possessive or protective. There was one incident about 6 months ago when she got lose and the neighbor chased her with a fly swatter and bit the neighbor. A police report was made, Cookie was quarantined and everything was fine, until this week. Now I understand, the aunt asked us if Cookie had her shots and then told us the dog needs to be put down. The bf and I are completely stunned. She was guarding her territory and Cookie, shouldn't have bit someone, but she's not a bad dog!
Of course the family has now taken sides. Her side (including grandma) says to put the dog down and how it can kill babies! Ok, this is extreme. Cookie is around my godson at least 2 weeks out of the month and my niece once a month and shows no aggression at all. Mr. P's dad, said it's isolated and to get Cookie into obedience classes and to stop taking her to other people's houses. 
I understand both sides, but if you knew the dog, she is a cute cuddly dog and I think she only bites based on people! I'm not fond of his aunt, or the neighbor and glad Cookie has the balls to bite! JK about the last part, I wish she would just bark when a person just walked into a house and not harm someone. Cookie has met Mr. P's aunt maybe once as a puppy and that's it. She probably smelled like dogs from being at her son's house all day, but still, Cookie was wrong, but not enough to be put down. I don't know. Any thoughts? I promise not to get any more upset. Do you think it's right his aunt report her own nephew to the police and make a report? Just seeing what you think...