The woman allegedly poisoned by a dental nurse told a court that there had been 'disharmony' at the practice in Shefford, Bedfordshire.
Laura Knowles practice manager told the court a dentist in the surgery requesting not to work with Kaur and in turn Kaur refusing to work with another dentist.
Despite the discontent in the Shams Moopen Dental Practice, she believed she was on good terms with Kaur, telling the jury: "I considered myself to be Ravi's friend and mentor."
The case continues.
More top news
An ITV News camera captured an 'agitated' Clive Lewis moments after he was told his speech at the Labour conference had been 'watered down'.
Paralympic gold-medallist Louis Rolfe was treated to a hero's welcome when he returned to his Cambridge college this afternoon.
A village in West Norfolk village is mourning the loss of a campaigner who battled to stop its fire station from closing.