Ofsted's new chief inspector "understands the extent of change needed" after the death of head teacher Ruth Perry, her sister has said.
Prof Julia Waters had her first meeting with Sir Martyn Oliver on Thursday, in his first week in the role.
She said she felt reassured that he recognised her calls for "radical" and "systemic change" at Ofsted.
Mrs Perry, whose suicide was linked to an inspection by the education watchdog, died on 8 January 2023.
School inspections by Ofsted will resume on 22 January, it has been confirmed.
All lead inspectors working in schools and further education will have completed mental health awareness training by then, while every inspector working for Ofsted will have completed it by the end of March, the watchdog said.
Sir Martyn also said there would be a minute's silence to remember Mrs Perry on the first day of training, which will take place exactly one year on from her death.
Speaking to the BBC Radio 5 Live Breakfast programme on Friday, Prof Waters said she felt "cautiously reassured" that Sir Martyn agreed the extra training should be just the first step towards "much more profound change".
"What Sir Martyn has said, and what we have been pushing for, is there needs to be really radical change, systemic change, cultural change at Ofsted - and this training is just the start," she said.
