I have the same problems with expectations developing when you see those small positives. Just be careful with them because they will wreck your mood over time. I experienced many phases where W was more chatty, would ask me if I needed anything or do thingd for me ( acts of service), etc. They would come and go with her moods of being extremely happy to depressed. Most of the depressed she tried to hide and I realized over time what I seen was often very different than what she was actually feeling(when comparing to thr things I seen snooping). Some of the happy days were even show, some weren't.
Don't hang onto her emotions or what she's doing too much because it can and will change over time. Keep working on you and making that your focus.
Accept what is, let go of what was, and have faith in what will be