Yep, it seems like it's usually the times when authors assume they're not going to get a response for a while that agents send requests right away. Usually this story comes in the form of people querying before the novel is actually done and racing to get it done and edited, but at least you know there's a good polished version waiting for you on July 30th.
Doesn't seem like there's any point in worrying about it. Either Kim doesn't care that you send so long after the request or she does care and assumes you queried prematurely. You can't change the circumstances either way. In the future, just makes sure you have a copy of your novel if you're actively querying (particularly if you're so actively querying that you're sending queries the day before you leave) and going to be away from your main computer. Plus, e-mailing to yourself is a good way to back-up your most recent version.
Simultaneous congrats and