The order, which had barred him from harassing or intimidating Harshita, ended on 1 October.
“I don’t know anything but I cannot believe this,” Ms Devi told the from her home in a small village in Haryana, India.
She hid her face during the interview because of the shame this case has brought to her family.
She said her son and daughter-in-law had sent her photos of food they had cooked on the 10 November and she had thought they were “happy in their lives”.
But earlier this week Harshita’s family told the she feared for her life and believed Mr Lamba “was going to kill her”.
Her family also said Harshita had a miscarriage in the weeks before her death.
They believe Mr Lamba is in India, but said police there were “not listening” to them. Local police have told the that UK authorities have not requested for them to intervene.
Ms Devi said she does not know where her son is, or if he is even alive.
“Some people even say he’s been killed. We don’t know what people are saying. I can’t understand anything. We’ve left it to God,” she said.