on page 1938, what was the exact reason for Rose's chilly attitude towards Kanaya? is she simply annoyed because she's busy, or is she just living up to the future Kanaya told her about? or is it because she just got hit with a lot of heavy shit from the doomed timeline and she's in kind of a dark mood

She’s busy, parsing the memories of Doomed Rose, and also likely hearing the voices of the Horrorterrors through the Dark Majyyks of her Wands.