They have dinner together in the evenings and I imagine the Queen is of the generation where she dresses for dinner'.
The royal feels it is "a delicate line", the source added, before explaining: 'I think we will see her doing private audiences again and more of the work we are used to seeing her do in public at some point in the future'.
Palace aides also confirmed to the outlet that the queen is still holding her weekly phone calls with Prime Minister Boris Johnson, who recovered from the coronavirus last month. "There is no suggestion of her stepping back, she is very much fulfilling her duties as head of state".
The Queen has broken tradition in a surprising royal first while self-isolating at Windsor Castle as the coronavirus pandemic continues to spread through the UK.
The arrangement means that an expected months-long absence from her usual - offline - duties will be the longest in the 68 years of her reign. "There are discussions what we could do and couldn't do come October".
Queen Elizabeth will stay out of the eye of the general public "indefinitely" at the Windsor Castle, say reports suggesting that the monarch will need to be extra cautious towarss her health because of old age.
This week the Queen marked VE Day with a poignant address which as aired exactly 75 years on from her father King George VI's speech at the end of the Second World War in Europe.
All her summer engagements including Trooping of the Colour have been cancelled or put on hold. Due to ongoing concerns regarding the coronavirus pandemic, it is safer for Queen Elizabeth and Prince Philip to remain in isolation for the time being.
The source went on to specify that if advice comes for her to halt her confinement at Windsor, she may listen to it and return to London, "but until that time, she'd want to be seen to be being responsible in her actions for the nation".