A mother with post-natal depression who attacked her seven-year-old daughter when the girl spilled nail varnish has been jailed for six months.
A court at Llandudno heard that the child, who cannot be identified, could not breathe and begged her mother to stop after she gripped her neck.
The mother, in her 30s, then told her daughter to lie about what happened and hid her injuries with make-up.
She admitted assault causing actual bodily harm.
Rhian Jackson, prosecuting, said the mother punched the girl to the eye and she was bruised and scratched.
Mrs Jackson said the woman told her daughter to lie about what happened, but social services received a referral from the NSPCC.
The girl said her mother used make-up to cover the marks on her neck.
Mrs Jackson added there had been previous social services involvement with the family when the girl had a black eye, scratches and bruises. But no further action was taken.
Gwyndaf Pari, defending, said the woman claimed she had slapped rather than punched her daughter, and was remorseful.
"It's clear she was having difficulty coping with her children," he said.
"It's the reaction of someone in difficult circumstances suffering with post-natal depression," Mr Pari added.