The child was left alone with her five-year-old sister in Langrug, Franschhoek on February 15 when the attack occurred.
The children’s mother, 26, said she had first taken both kids with her to the party.
“I went to a party at around 7pm and when I got there, the children were sleeping and I laid them on the bed where I made sure to keep an eye on them,” she said.
“But their father arrived later on in the night, drunk and took them and he said he wanted his children to sleep at home.
“When he got here, he put them on the bed and left them there, but did not lock the house or the gate outside.
“He came back to the party, stayed for a few hours and then went back home without me.
The mom said she realised her daughter had been raped on Sunday morning.
“I inspected her and saw that her pants and panties were full of blood.
“I asked her what happened and she told me who hurt her.
“He is a family friend, the children’s father’s old friend from back in the Eastern Cape, he used to come here all the time.
Police spokesman Captain FC van Wyk said the suspect was arrested on Sunday and appeared in court.
“A case of child neglect has been opened and will be investigated against both parents of the victim,” he said
The three-year-old spent two days at the Tygerberg Hospital where she got stitches in her vagina and anus to repair the tearing after the brutal attack.