She was the other woman, but that did not stop her from flying into a rage when her married lover told her he was not allowed to leave home to meet her.
Mabel Yeow Li Hoon, a 42-year-old sales manager, marched up to his flat, wielding a 25cm-long spanner, to break her lover out.
When she got into the flat, she viciously attacked his wife, hitting her with the spanner as well as kicking and biting her, in front of the woman's husband and 12-year-old son.
Yeow was jailed for two weeks on Monday after pleading guilty to two counts of voluntarily causing hurt.
The victim and her family cannot be named to protect the identity of the son, who is a minor.
The court was told that the husband, who owns a Chinese and Western medicine hall, had wanted to leave the family flat to meet his mistress at around 4pm on Feb 25, 2013.
When he could not find his keys, he blamed his wife, a hairstylist, for locking him in and they got into an argument.
When Yeow, who was waiting in her car at a nearby carpark, called the man, he said he could not meet her as he was not allowed to leave the flat.
Deputy Public Prosecutor (DPP) Yvonne Poon said that Yeow told him that she would go up with a spanner to break him out.
After grabbing the spanner from her toolkit, she went up and used it to hit the metal gate, the lock and the wooden door, leaving dents, while shouting for them to open the door.
The man then pushed his wife to the floor and, after finding his keys, let his mistress into the flat.
Yeow headed to the wife and kicked her in the stomach with her high-heeled shoes.
HIT WITH SPANNER
As the wife tried to shield herself with her hands, Yeow swung the spanner and hit the victim twice on her left forearm.
DPP Poon said: "(The husband) was standing by the side of accused and making half-hearted attempts to block the accused and victim from getting to each other."
The victim was, by now, angry and she reached past her husband to slap Yeow on her right cheek.
When Yeow started hitting the wife again, she ran to a dining table and picked up a chair to shield herself.
Instead of helping his wife, the man took the chair away, allowing Yeow to pelt her with children's books from the table.
When the victim threw the books back at Yeow, Yeow stepped forward and stamped on the woman's toes with her heels.
The man then tried to stop the fight and asked his mistress to leave the flat with him.
The wife pleaded with him not to leave and held on to his hand. Seeing this, Yeow bit her right forearm several times.
When the wife tried to pull the spanner away from her, Yeow retaliated by biting down hard on her right thumb, drawing blood.
She also kicked the victim's stomach. Despite being in pain, the latter picked up a shoe and hit Yeow's arm.
The husband finally separated the women and left with Yeow. The police were alerted to the incident at around 5pm.
The victim was taken in an ambulance to Changi General Hospital, where she was treated for wounds on her feet and bruises on her forearms.
She was given three days of medical leave.
The judge said it was "purely fortuitous" that the victim had suffered only minor injuries.
For each count of voluntarily causing hurt, Yeow could have been jailed up to two years and fined up to $5,000.
This article was first published on April 22, 2015.
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