She's gotten "cold", and says she doesn't want to hear about how I feel, so she doesn't ask, and I don't tell.
I think this is a common reaction. There is self-protection in there. People in relationships with alcoholics have often seen and heard the promise to stop drinking only to have their hopes dashed when the alcoholic starts drinking again. So, there is fear in her reaction, too.
It's a good possibility she is waiting to see if this will last before she buys stocks in it. Echoing what others say, just stay sober and that is best way to win her trust...