IMO His mother just saying hi and walking by when he was questioned followed by her lack of presence at his trial and toppled by her 28 year old, drug addict son moving in and out of her house may speak volumes, not judging though it could simply be a case of her horror against the crime he is being accused of but it's strange.
On the MTR interview transcript.....MTR's mother arrived towards the end of the interview, and was informed by one of the police officers that they were interviewing her son.
In police parlance...........that means this matter is private and you are not invited. Had she not excused herself..........they would have asked her to leave.
I haven't heard if MTR's family is in court or ever have been.
Maybe he has requested they don't attend..........we don't know the facts.