Hello, Sorry to have taken so long to reply. I hope that if you decided to indirectly ask her about it, it went well. If she can sense them, then it is very likely that she is sensing despite you trying to hide your worries.
I am still in regular contact with both of my parents. I did not feel that I had to choose between them (until the divorce and the inevitable "who would you like to live with" talk of course. I ended up as more of a peacemaker and saw my role to be the person that kept things from getting too out of hand. As an adult, I find it strange that I had that reaction; I didn't think I ought to keep my parents together or tear them apart or really do anything on that front; I just wanted to make sure no one hit anybody or broke things... Although I felt my mom's pain more than anyone else's, I tried to not let that affect my peacemaking.
On the nice side of things, I think I learned some important lessons pretty early on. Before kindergarten I'd learned the power of perspective in that people can do one thing; you can see them do that thing, and they can be completely convinced that they did something else. Also, I'd learned that in arguments in which participants have opposing views, both views can be right. Mostly, I learned that the truth can be buried somewhere under the different perspectives of people and I may never know what really happened unless I see it with my own eyes. I guess what I am trying to say is that I didn't feel that I had to choose because I knew that my mom was sad/hurt, etc and I knew that my dad was angry, but I also knew that they both loved us and I just wanted to help them both be less angry/upset/worried.