...Imagine being in Indigo's shoes I guess. 
How familiar is she with the Tarcan territories? 
What strategic concerns would she have? 
Will Indigo further question Kaalia's leadership (esp. in Shae's absence)?
What information and opinions does indigo have to offer?
Perhaps knowing of the decimation in Tarcan brings up tragic memories. Does this galvanize her resolve further, or leave her shaken?

It really depends on her perspective, but hopefully that's enough food for thought.