If this text, Clinical Forensic Medicine, can be trusted, there is no way to determine if
a. the smaller wounds are from taunting or
b. the smaller wounds are from holding the victim at bay with knifepoint:
p. 208
Minor incised wounds may be identified if the knife is held against the skin (often seen in the neck area) or if the tip of the knife has been used to taunt the compliant...
http://books.google.com/books?id=zp...nsics knife wounds which are taunting&f=false
So it is all a matter of how the defense or prosecution interpret this in light of all the other evidence.
So yes, in order to follow the prosecutions case you would have had to believe that AK hates her so much that she wanted to taunt her,. What evidence is there of such hatred? Indeed, I do not think the prosecution is even naming this argument anymore, they seem to have switched to a more impulsive anger attack based on AK going berserk over MK chiding her over cleaning (though we also have no evidence of that either; anyone ever testify they saw the two girls arguing at all? Anyone see them fighting about cleaning? Anyone hear AK talk bad about mK? No)