StackALee
Has the court completely disregarded the witnesses who said they heard an argument?
The defence have said they have witnesses who lived nearby who say they heard no argument and no woman screaming. This should cancel out the other testimony or at least cast doubt upon it.
How immediately did he call for help?
He rang for help at (according to the phone records) 3.17 for the first call, followed by two more calls in quick succession
What other motives do there need to be?
There's no motive except vague "jealousy" which is hardly conclusive. I don't know what else there could be but this is a bit too vague for my liking
Maybe she didn't ring for help because she had no idea that he was going to be crazy enough to shoot her to death?
Maybe not but then why do you think she took the phone to the loo with her?
The prosecution have presented all their evidence and yet you, and others, still appear uncertain Apart from OP's testimony the defence have yet to present their case which should, obviously, strengthen their case.
But we will see next week . Time for bed now I think.