It sounds like a hematoma and she will need to be seen by a vet.
It is not an emergency, but I would have it looked at soon.
A hematoma is when the blood veins in the ear pop and the ear
swells up with blood. Here is more info on it
http://www.lbah.com/ear_hematoma.htm
Good luck!
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Lindsay Bryson
Allegro Beagles

