I've always enjoyed Alex Kingston's River Song character on Doctor Who — even if I haven't always enjoyed the things Steven Moffat has done with her. The Christmas Special this year (which we watched last night in our post-returning-home daze) gives her a pretty good send-off, even if her (in retrospect) obtuseness early on was irksome. I'm glad she got a chance to play with Peter Capaldi, too.
(https://www.youtube.com/watch?v=t-wgLFj6bbI has the original River "death" scene, which ties up neatly with the events of this ep.)
How the Doctor Who Christmas Special Finally Gave River Song the Husband She Deserves
Alex Kingston on being Doctor Who’s secret weapon and getting the closure she richly deserves.
Er.. TIME TRAVEL SERIES!.
She also has some way to get around in time.
She’ll be back.