She became so important to them that they wondered how they had ever managed without her in the past. And the longer she stayed with them the more indispensable she became, so indispensable in fact that their one fear was that she might some day move on.
Design is a plan for arranging elements in such a way as best to accomplish a particular purpose.
Growing up, I had one very specific idea of what a wedding should be, and that was the wedding of Fraulein Maria and Captain von Trapp in 'The Sound of Music.'