The father of the victim, who probably knows more about this case than everyone, has said that between the two, they provided 9 alibis. Would you doubt the father of the victim? Would you suppose that he is making things up, or is it quite possible that he knows exactly whereof he speaks?
Yes, I doubt him when he says "It is said" that AK and RS had nine alibis.
Apparently Mr Kercher is aware of cases where DNA was collected years after the fact and it was accepted as evidence.
The late collection date is only one of many problems surrounding the bra clasp.
And I think the victim's family should be left out of the discussion in general after this. They shouldn't be used as a barometer for the quality of evidence in this case.
Does any motive for murder make sense?
Murder is a nonsensical act. But the reasons for doing so have to be grounded in reality. Killing someone over money or a lover's spat are very real situations that happen every day. Helping a man you've met once or twice have sex with your roommate and then recruiting your boyfriend of one week into stabbing her because she refuses to participate is practically unheard of.