Mairéad gives daughter Phoebe a piece of her mind in Sunday's Fair City on RTÉ One and the RTÉ Player.
Phoebe is still acting up over Mairéad's new relationship with Dean - and Phoebe's latest barb sees Mairéad putting her foot down.
"Just because he's your boyfriend doesn't mean I have to like him," says Phoebe.
"You've had plenty of time to get used to me and him," says Mairéad angrily. "So grow up and cop on!"
Fans can watch what happens next on Sunday on RTÉ One and the RTÉ Player at 8:30pm.
Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, Thursdays, and Fridays.
