Could it be they felt a bit awkward , as Amanda was accused of murdering her? Perhaps they felt it would sound like an admission of culpability??? After all, if AK and her family are such good fakes and liars, this would have been the time to lay it on thick, "How very, very sorry we are, how grieved and pained, we have lost her, too, etc."
Thank goodness the Knox/Mellas clan has an excuse for not expressing condolences to the family of Amanda's "good friend".
I was merely pointing out that something was published about the absence of condolences, not remorse.