Asuma didn't know what to say, Or perhaps. Didn't know what she wanted to say, she didn't want to be the messenger of death, so why tell her?, Asuma made up a lie in her head. and then Lying to the Humongous Person, Scratching the back of her head 

[b]Oh yeah, We were uhm just heading to Whiterun for a tiny vacation I kinda got Separated and came here by accident, tough luck huh.[/b] 

the lie was pretty obvious, Who would take a vacation in whiterun at this time of the year?,