OMG, Lynzy, I am so sorry you had to experience that.  How horrible...how sad.  To top it off, the lady turned her anger at you...pathetic.  
 
I have had large dogs who hated being indoors in the daytime who I would allow to stay in a fenced yard when it was nice out, and one of them got her leather collar tangled in a small plant, freaked out and thrashed around so much she got it so tight she was choking.  Last time they wore collars when I wasn't right there with them, too.  Some things you think are safe...aren't.  But, when it comes to a small dog, I never leave them alone.  Too many dangers, especially since someone let one of my large dogs out of the fence yard and she crossed a busy highway before I found her.    {{{Hugs}}} and nice choice on the Hot Toddy!