Jeannette Clements says her daughter is innocent of murder, claiming that she struck her husband accidentally as he rode his motorbike alongside her car at night.
Nicole Reyes, who has two children living with their grandparents in Rumney in Cardiff, could face up to 30 years in prison if found guilty of her husband's murder.
"Sometimes you just feel as though you can't even cope - and it's the same with my daughter," says Jeanette.
"She has her good days and bad days, but she's getting more bad days now as time goes on, because we didn't expect it to go on for this length of time."
More top news
Drizzle gives way to more substantial rain which will push in to western areas during the second half of tonight!
Geraint 'Busker' Jones, from Llandysul, has been entertaining the crowds since the 1960s.
Wales will not bid for the 2026 Commonwealth Games. Ken Skates said the Welsh Government had concluded it is not in a position to do so.