I think this is wise -- you don't want to make any major decisions while you are emotional and in shock over her behaviour.
If it were me, I would probably go in to see my vet one last time. Get one more thorough check-up done for health issues that may be exacerbating her aggression, and also look into more aggressive or faster acting anti-anxiety drugs. I would also move her to my apartment to be micro-managed. Basically, give it one more shot.
At the end of the day though, no one knows Chloe and your situation as well as you do, and it is your judgement call to make. I can tell that it is very obvious how much you have done for Chloe, and that no one would judge you if you opted to put her down tomorrow. As others have mentioned, sometimes a peaceful death being held by a loving owner is better than leading an anxiety filled, miserable life. Either way, take comfort in the fact that she has had a number of good years with you that she probably would not have had with an average joe owner. You made it possible for her to stick around and enjoy life for as long as she has, and if this is the end of the road for her, at least she has had a good run of it.
I sincerely hope you come to a decision you can feel at peace with. Putting down an animal is so hard, especially in cases where the animal is physically healthy but not really right in the head. We are all here for you, and you will certainly be in my thoughts *hug*