nighty mein

And then we have Caleb/Liam providing a lampshade of how often he sees them worried for each other.

For sure, I totally agree!

I think that Beau is very good at hiding her worry, which lends to her ability to not seem "weak" or vulnerable in front of potential foes. Only in safety of those she can trust does she allow herself to openly worry, like Caleb.

I actually find that in general, Beau isn't overly worried about Yasha - not because she does not care of course, but because she knows Yasha can handle herself. I mean, she knows Yasha is pretty much unkillable. And with them both taking frontline roles in combat, they need to have the mutual trust in each other to take care of themselves. Personally, I love that about them and think it's a healthy mindset to have, as opposed to something which could be more of a codependent "I cannot be away from you or you won't be safe" mentality.

What's interesting about that moment of worry in Echoes of the Solstice is that imo, Beau senses that something very bad and potentially world-altering is happening. Her first thought is a need to get back to Yasha. Not necessarily because she thinks Yasha is in danger, but because shit is going down, and there is an impulse to be with the person she cares most about in the world. Then if the world falls apart afterwards, so be it, but she has to be with Yasha for whatever comes next - everything else comes secondary.