I think that's the trainer. I'm not going to compare with previous pics, but he's not wearing an earpiece. Her bodyguards always wear earpieces. Even the one that took her shopping - he was alone - wore an earpiece.

I saw on another site that he was seen having breakfast with the trainer...on a balcony. I dismissed it as rubbish but maybe trainer is his non-TS companion. When she's writing or sleeping or down-arrowing nasty comments on DM, he hangs with the trainer.