A guess at a replacement:
Gert's Royals @Gertsroyals 3h
New Private Secretary for Kate?
Laura Baker, who is William's Deputy Private Sec
Worked for Prince Charles
I have an image of Rebecca dancing on a table top and shouting 'I'm freeee'.
Hope she & new hubby go on a honeymoon to some destination where she has never been an employee accompanying her employer.
I think they may consider Laura Baker but we know Kate is the type to only want those she trusts to be around her. So I think there may be some serious discussions and maybe some job shifting.
Personally, I would not be surprised if she considered Natasha.
For me that would be okay especially if it meant she hires a proper stylist.