So he had wanted to propose for a while? It did kind of make sense, since he would add it in conversation from time to time. Saying that if things were different then he would marry her, but this time.. he actually did it.
When Mark said 'we', Isabel knew that mean't it was him who didn't feel ready. She wasn't mad or anything, it was perfectly understandable with all the crazy things going on since they met. Nothing was straight forward, so of course he was bound to be cautious. "Elegant ladies? hmm.. well from the way you act, I doubt everyone keeps to the same high standards any more.." she said with a chuckle.