SOLVED. Sci fi romance: two groups temporarily stranded on hostile planet

[Kim]

I recently read Lois McMaster Bujold's Shards of Honor and (this happens to me often) it triggered a memory of another book with some common elements in the opening portion. I believe this book is a fairly recent publication - probably within the last five years.

The book starts with two groups, one human and one humanoid, temporarily stranded on a planet - possibly the result of spacecrafts damaged in combat. I think that the groups represent competing corporate/military powers. The groups work together to reach safety until rescue can arrive.

I think there is a trek across desert-like conditions to a mountain base shelter (artificial cave?) with planetary hazards along the way. There is conflict between the two groups and within the first group (humans).

[Kim]

The book is No Words Alone by Autumn Dawn. I can't believe I've been puzzling over this off and on for days and when I finally post a request, I stumble over the book (digitally speaking) almost immediately.