My W has thrown out interesting bits similar to that one from your wife, but they haven't amounted to any noticeable change in her actions. I work hard to keep from getting spun up about them but it's so hard not too when we're searching for any little glimmer of hope. The most successful way I've found to deal with it is to recognize it as a positive thing, a bean that goes on the positive side of the scale. That allows me to feel good about it. Gotta build up those positive beans to have any chance. But I try to remember that I really have no idea how many other beans are on the positive side and I have a pretty good idea that there's a sizable pile of beans on the negative side. So I shouldn't be too surprised if, overall, I don't see any results from this positive bean (i.e. the scale probably won't move very much).
And I'd also guess that the fact you had a good, fun conversation is a bigger positive bean than her sleeping issues. So keep it up! Especially during times she seems to be slipping away from you.
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