Just registered to respond to this, but a bit late!
If her ear should swell up like that again with blood after a lot of head shaking, get Homeopathic Hammamellis 30c and give her 3 daily until it goes down, which it should within a day or two.
This happened to my Weimaraner last year when she had a sudden severe allergy and basically shook her head all night. By the early hours both ears were like balloons! I took her to the vet for an anti-histamine shot but wouldn't let her touch the ears, and got the Hammamellis and they were back to normal in a couple of days!
Hope she's fine, sending lots of Reiki for her.