Geri Halliwell has reportedly laid down 'strict ground rules' to Christian Horner in the wake of his investigation at Red Bull following accusations from a female employee.
The Spice Girl singer made her first public appearance since the allegations were first brought against her husband at the Bahrain Grand Prix last weekend.
She walked into the F1 paddock hand-in-hand with Horner in a show of unity after the Red Bull boss was cleared of any wrongdoing by the investigation.
Halliwell is said to have still been in the air when alleged messages between Horner and his female accuser were leaked by an anonymous email.
Her appearance at the Bahrain Grand Prix suggested Halliwell plans to stick by her husband, who thanked his "incredible wife" at the weekend.
Geri Halliwell was seen supporting her husband in Bahrain
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But the 51-year-old has reportedly set Horner with an ultimatum to completely 'cut ties' with the female employee.
According to The Sun, Halliwell is still said to be furious over the whole situation and has set down 'strict ground rules'.
A source told the newspaper: "Although she smiled for the cameras at the Grand Prix, Geri has laid down some strict ground rules.
"One is that Christian cuts or reduces contact with the woman — but that is difficult because of her role at Red Bull.
"And she has definitely had her say over what messages he sends.
"For obvious reasons, Geri would like the female colleague — who she knew before her appointment — to be out of the picture as much as possible."
Horner is also facing pressure from within Red Bull it seems with Max Verstappen's dad speaking out on the investigation.
Speaking ahead of Saturday's race, Jos Verstappen claimed Red Bull risk being "torn apart" if Horner stays in control of the team.
"There is tension here while he remains in position," Jos Verstappen said.
Geri Halliwell was by Christian Horner's side at the Bahrain Grand Prix
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"The team is in danger of being torn apart. It can't go on the way it is. It will explode."
But Horner was defiant after Saturday's race that he would keep his position at Red Bull.
When asked by reporters whether he was confident of staying on as team principal for the whole year, Horner replied: "Absolutely."
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Geri Halliwell is yet to speak publicly on the accusations against her husband
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He added: "There was a full, lengthy internal process that was completed by an independent KC. And the grievance that was raised was dismissed. End of. Move on.
"I've always been entirely confident that I would be here. And my focus is on the season ahead and the races we have ahead.
"What people choose to write is up to them. But my focus coming out of this weekend is on the next race in seven days' time in Saudi Arabia."