Anastasia Myskina has repeated her insistence that she will stop playing for Russia's Fed Cup team if Maria Sharapova joins the set-up in 2005.
Myskina takes offence at Maria Sharapova's father
Myskina said on Wednesday that she is unhappy with the courtside behaviour of Sharapova's father Yuri Sharapov.
And on Thursday, Myskina added: "Why should I feel sorry for what I said yesterday?"
"I don't want to be on the same team with people who don't show respect to me as a person. End of story."
The French Open champion ignited the row after the first day of play at the Fed Cup semi-finals on Wednesday.
"If she joins our team next season you won't see me there for sure," said Myskina.
"His behaviour is totally incorrect, simply rude. I don't want to be around people like him."
Sharapova has been kept out of this year's team by Myskina and US Open champion Svetlana Kuznetsova.
Larisa Neiland, assistant to Russia Fed Cup captain Shamil Tarpishchev, said: "Maria's main problem is her father and I just don't see how he would co-exist with other girls' parents and team officials."
Referring to the season-ending WTA Tour Championships, won by Florida-based Sharapova in Los Angeles, Neiland said: "Every time Maria was playing a Russian girl, her father's behaviour was simply outrageous.
"I just don't see how he could work with the rest of us."
After losing to Sharapova in the semi-finals, Myskina said: "He was just yelling and screaming instructions to her and I thought he just might jump right on the court at
one point in the match."
Sharapov received a warning from the chair umpire for coaching his daughter during the Myskina match.
Fed Cup captain Tarpishchev has tried to play down the situation.
"(Yuri) Sharapov has a strange, quickly-changing nervous system. It often leads to stressful situations," Tarpishchev said.
"I must say that parents often interfere with the team's process. It gives us an extra headache but they are not the ones who decide the make-up of the team.
"I feel that things will calm down soon and we'll have Myskina, Sharapova, Kuznetsova and everyone else playing for Russia.
"In my 30 years as team captain I've seen a lot worse situations and we've managed to survive all of them."