I bet she's more careful when she's making quilts that aren't part of a tutorial. She probably goes quicker than usual on the videos so she can show everything and keep it interesting, and not get bogged down with slow stitching and fussing around with perfect cuts.
And personally...I'm a little bit sloppy too, so her style totally works for me. My quilting time is limited (for some reason my employer demands I actually WORK several hours every week day for my wages, it's crazy) and I have a million and one quilts I want to make, so when I do get time I'm very excited and tend to work fast so as to get the most done possible. For some quilts that does work for (nice square-and-rectangle type patterns) but for others, not so much! Which is part of the reason I work on many things at once. Some projects are good for quick 15-20 minute sessions, others need a slower pace...those are weekend projects.
