It's interesting how sometimes, changes in a LBS can trigger a WAS/MLCer to BD. Which is where script like, "too little, too late" can be heard.
Obviously, those two major changes were a big step for you in a good direction. And yes, your W may not have recognized them as such... or... she DID... and your changes then triggered her because YOU were suddenly different. You changed yourself, the sitch changed, and she could not follow the same patterns.
Give your chemicals a chance to catch up with your physical changes. Eventually, you are likely to notice a positive change in your emotions. If you don't notice any changes in a few weeks, maybe seek a dr. regarding that.
There's a big difference between emotionally available and emotionally supportive. And no, right now it is OK for you to be neither, for your W. You can be physically available and physically supportive if she were to ask, but you need to be emotionally detached if you are to stay off the roller coaster.
That said, are you emotionally OPEN with others? That means, shy or not, do you find it difficult to be emotionally open and vulnerable with friends?
On emotionally supportive, are you able to be empathetic (rather than rescuer) with others who might be down?