Handing you a grip Spin 
If she thought anything was amiss she'd have to tell you, they can't (and won't withhold information). Was your last appointment your first? If you're private and it was your first appointment it could've been a case of her being super friendly to make a good impression.
I went private with DS and went to another consultant before I settled on my own and I do think there's an element of securing he business/client/patient with the initial appointment.
Her thoughts were probably miles away at the time and had absolutely nothing to do with your measurements. It's mind boggling the hours obstetricians work, I couldn't get my head around the hours my consultant works! Complete workaholic
I'm jealous of all your scans, I loved that with DS, unfortunately it's plain old public this time round! (but same consultant and I think she'll look after me)
Anyway, total tangent there - I'm sure all is fine Spin, I'd be doing exactly the same analysing if it's any consolation