relaxed , amused at mags and scarlett 's hilarious behaviour ( which seemed somewhat desperately hilarious ) , respectful to her father ( regardless of bertie 's expression , which lapsed consistently into one that could only be described as astonished ) , familiar with his family and possessively demonstrative to sibyl - this was not mercurial colin , this was loverly royce who could n't get enough of her and did n't care who knew it .