I ended up the same way, that is, with no factual info, but an absence of info. Seems to me there must be something out there, but I can't find any commentary. She seemed pretty good at the craft and had real presence. Must be more. If she's alive, that would be great, especially after last April's news. I will post whtever I find.
I looked in the SS death index and did not see an entry for "Louise Henry" but that doesn't mean anything if the name she used in real life was different (due to marriage, etc.)
Thanks again Steve - yes, it was the news about Linaker. We must all eventually pass, but seeing a great film with her vibrancy, and then hearing news puts the matter in direct privity. While presumptuous, it is like losing someone you knew. My son gave me a gift - a set of DVD's with CC in Reno. Crystal, crystal clear. Great b/w photography. There she is. Time stands still.