Sorry, I don't agree with any of you who think there isn't enough evidence for murder or conspiracy to kidnap. I think she will be convicted.
I think she is coming across as completely unbelievable. In the absence of a believable version she proves her own guilt IMO. Her story is more than ridiculous from start to finish and fails the test of reasonably possibly true.
NM was not physically capable of managing that prolonged attack on his own, against an able struggling teenager, inside 15-20 minutes, and looking completely normal and fine afterwards. He had blood to clean off his hands too, and blood on his hat, so he would have been washing in either the kitchen or the bathroom adjoining the kitchen when, or rather if, SH came in. He didn't include any of that in his version.
Her denials of joining in with NM's sexual fantasies are also patently untrue, and she always did what he wanted to make him happy. She says she went there to socialise at a time when no-one was going to be in.