Sentence:  The former royal butler Guy Hunting recalls the uphill task faced by the Princess's <WSD>dresser</WSD>, Isobel Mathieson, each morning. 'During her many years with Princess Margaret, the biggest challenge Isobel faced each day was separating the royal body from its bed. 
Meaning of the word marked with <WSD> tags:  A servant to royalty etc. who helps them with tasks such as dressing.