Oh the poor thing, I don't know what it wrong with some people, it makes me so mad! I'd have done the same if it meant saving my cats, only the other week I came across two stray dogs on my estate and physically got between them and one of my cats to give mine a chance to get out of the way. That's 3 in the last few months, the last one damaged the garden gate and wrecked a fence panel that the neighbours had to replace urgently as they have a dog themselves! Why can't people control their dogs!
A few years back one of my aunt's cats was killed on her property by a dog whose owners just let it wander free. Nothing was done and it's just heartbreaking and makes my blood boil!
Glad Binnie got back ok and hope she is alright, bless her.