this chapter is mostly interpretation the looks they give eachother and such and the meaning behind they're words if some people who read this would clarify it a bit ^^ :
here i think sakura didn't know who was holding her and was shocked to see it was syaoran and maybe at first she thought it was C!S
here they stare and probably she realized it wasn't him while he probly thought about her sadness and i think i detect a bit of pain in both they're eyes which means R!S may have some feelings for her
which leads to the sorrowful feelings expressed in the both here since sakura was abandoned and C!S went loco and hurt her dear friends she feels betrayed and R!S because he failed to prevent this situation from happening and caused grief to those who lived along with C!S (any of this makin sense?) sakura rushing to leave the country and the feather behind could also represent that the surroundings just causes her to remenber the pain and how C!S after all they went through abandoned her and leaving the feather behind because she feels as if syaoran is part of her lost memories and maybe she's afraid that feather contains him (not sure can only be certain in the followin chapters) but also for the people in the country
see syaoran looks a bit shocked maybe by her words or her standing strongly even after these events that she can go on and is not as fragile as it seems or the building collapsing maybe the last one is more likely but even so i think the look is over her actions.