It doesn't make it any better. Doesn't make it feel right, and it isn't, wasn't, but Tidus doesn't want to belabour the point any further. The things he does want to say...

"We should keep going. We can't get stuck out here tonight." Not on this mountain--not without finding shelter. Anything else would have to wait, but he does ask: "Are you sure you're okay? You need anything? Are you warm like that?"