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
Ryan Giggs accepts he must get used to the loneliness of management again on his Wales journey.
Skies will remain cloudy for most with further rain or drizzle through the afternoon.
Labour needs to "show leadership" and warn about the risks of Brexit, Owen Smith said after being dismissed from the shadow cabinet.