Hello,
Based on your description and the photos I feel about as confident as I could that this was a cancer in the nose/face/brain and that you did the right thing.
No matter how much money you would have had, or how many specialists you could have brought her to she was not able to survive or get better with this.
I am so sorry. I do believe you did everything you could have and that your cat was so lucky to have had someone who loved her as much as you did.
Sending love and condolences.
Krista.
Hello,
I think that you need to get in contact with your vet asap. Otherwise the ER is your next best option.