I had one stitch pop open in about the same area (that's one of the spots under the most tension, especially during dilation, so it's not surprising). I'm not even sure I'd call it a complication, it was so minor. The spot was definitely raw and sore for longer than the properly stitched places, but it did heal up fine on its own, and there's not even a scar now. It sounds as though you may have had a slightly larger set of stitches give way, which is probably going to be more uncomfortable in the short run but shouldn't be serious.
The one caveat is that a) my surgeon got right back to me when I asked and sent pictures and b) he clarified that he uses several sets of stitches, one for each layer of skin, so that all that had broken was one of the surface stitches (the deeper layers were still solidly connected) and there was no real risk beyond discomfort. I don't know Bowers' methods, and it's concerning that she won't answer you.
However, I have questions about the advice to keep the area clean and dry - do the best you can, of course, but that spot is VERY hard to keep dry or perfectly clean. A gyno should know that. 😉