I know its frustrating...... I hate being left hanging, but I've come to accept that as part of planning a DW. I wouldn't get to upset just yet under the circumstances, like you said she is likely swamped but by all means vent!!!! Get it out, that's why we're here! Just think how relieved you'll be once everything is confirmed. I remember feeling the exact same way when I was waiting on dates. But DON'T WORRY It will all work out!