SINGAPORE - The judge in an earlier case called it one of the worst cases of maid abuse he had seen.
Yesterday, another judge described Chan Huey Fern's actions as "horrifying".
Last year, Chan, then 32, was jailed for 21 months for abusing her Indonesian maid Juwarti, then 22.
It was believed that her abusive acts began only in mid-December 2010.
Yesterday, the State Courts heard that the abuse began earlier, in March that year.
Chan had punched Ms Juwarti in the eye, and kicked her in the groin, abdomen and back.
The ordeal ended at the end of December, when the terrified maid fled the flat to seek treatment.
At the State Courts yesterday, Chan was sentenced to another three months jail following new evidence.
District Judge Lee Poh Choo said yesterday: "In his judgment, District Judge Low Wee Ping had counselled that this was one of the most distressing maid abuse cases he has seen, and I'm inclined to agree with him."
Chan had faced seven charges of voluntarily causing hurt to Ms Juwarti between March and November 2010.
She pleaded guilty to one charge of hitting her maid with a foldable chair. The other charges were taken into consideration.
The assault with the chair happened after Ms Juwarti had been looking for a compact disc for Chan's young son in the living room of their Buangkok Link flat sometime between July and September that year.
But Chan felt that her maid had not been looking hard enough and became angry.
She punched Ms Juwarti on the chest, causing her to fall.
She then pulled her by the collar to the master bedroom and closed the door.