Your comments are flattering! I appreciate the sentiment. But I don't really expect to find a profound understanding of agape love in the canonical Doctor Who (which is one of the reasons I wrote those fics in the first place) so I'm not surprised that it's so little in evidence. As with so many other things, there are flashes of light but no steady glow, as it were.

That being said, I don't think we've seen enough of River Song to really judge her clearly. Not that I don't agree with you to some extent -- I wouldn't have chosen her necessarily as a candidate for Companion The Doctor Actually Marries -- but I do think she gives indications of being potentially the Doctor's match in wits and courage, and certainly not in awe of him (which is a nice change from the hero-worship we got from some of the other New Who companions). Which seems to me a decent start, anyway. I guess I'll wait and see.