Last evening, she started throwing up and it continued this morning. She lost control of her hind quarters while on the stairs yesterday and today and rolled down the stairs.
Since awaking this morning, she was unable to lay down or even sit...she wandered about the house aimlessly, walking into things and getting lost under chairs and tables. She walked in circles a lot.
After 4 hours of this, I took her to the vet. After an examination and review of the original symptoms from 2.5 weeks ago and hearing about her worsening neurological symptoms, circling, etc., the vet felt that the most likely explanation was a brain tumor. (The possibility of this was mentioned at the original visit as a "possible" reason for the blown pupil.)
Andy, I, and the vet all agreed that Lady seemed like she was suffering today so we made the decision to put her to sleep and had it done right away. We have brought her body home and Andy will bury her in the back yard later this evening.
Lady died peacefully in my arms with both Andy & myself there to comfort her. She is no longer suffering. We will always remember her for the joy she brought to our lives. She was a sweet, faithful, and loving companion for 12.5 years.
You will be missed.