I'm guessing she is as least 7.5 or 8.5 y.o. I have pictures of her from the past five years. Glad to see she's still around. She's a smart one.
Yes, she's missing most of her tail. That's why I'm sure it's the same doe year after year. Very easy to pick her out from the herd. It's kind of funny to see her stub "flagging".
Yes, I've had a cam set up on a pond behind my house for 5 years. She keeps showing up. I've also spotted her while hunting several times.