keep after somebody
keep at somebody about something

They kept after her about what he looked like, and she just couldn't tell them.

But she kept after me until I finally told her.

His wife and daughter seemed to keep more to themselves after that.

Their teacher kept both after class to tell them they had no future in writing, he said.

There was nothing to keep her here, after all, for the moment.

"You going to let her keep the information after all this is over?"

None of the other men keep after me the way he does.

"Someone had to keep order through the war and after."

"Knew we should have kept an eye on him after the sun went down."

The security team had left the office two hours before and he felt like a slow student kept after school.