Judge Dermot Dempsey said the defendants' behaviour was not "very ladylike". He fined Jennifer €300 and sentenced Louise to a month in prison, suspended for six months.
Jennifer, of Shangan Green in Ballymun, admitted before Swords District Court to public drunkenness and threatening and abusive behaviour.
Louise, of Shanliss Park in Santry, admitted breach of the peace.
Garda Deirdre Bradshaw said she was called to the Wright Venue, Airside Retail Park, Swords, shortly before 3am on October 29.
She said one of the women had lost her handbag and shoes in the nightclub and had been brought in to look for them.
However, she couldn't find the property and was asked to come back the following day.
Garda Bradshaw said Jennifer told her "I'm not f****** moving" and "f*** you", and called her a "f***** pig".
Garda Noel Callan said Louise was aggressive towards door staff and when gardai intervened she started abusing them.
Defence solicitor Valerie Buckley said Louise Sheridan realised her behaviour was out of order, and she apologised to the garda.
In relation to Jennifer Sheridan, Ms Buckley said she has no previous convictions, and is working in a supermarket.
She said Jennifer hoped to travel to Australia next year and she asked the judge to leave her without a conviction.