No, you do not have to put her down. That's one thing I have learned from watching The Dog Whisperer and the way he rehabilitates the toughest cases. He once worked with a Bichon Frise that bit (attacked) its owner. When the dog tried to bite, rather than withdrawing his hand like most people do, he grabbed (gently) the dog by the scruff with one hand while using the other hand to gently lay her down on her side - a submissive position. After doing this several times, the dog stopped biting.
If you are not able to do this, please rehome your dog rather than putting her down. Someone else can help train her not to bite. You can even contact The Dog Whisperer and maybe he will take your case.
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