(?) Keep One Post at Top of Blog

My wife has WP-driven site [here] and I am trying to figure out how to get her initial post (which is an introduction of herself) to always float to the top —or simply remain there.

Maybe a better way to state things is that our priorty is to

1. have an opening introductory statement about her business/service — and allow comments (or a link to where comments can be posted/read, i.e. Endorsements <– non-link in this case)
2. always have the above post-and-comments appear in the topmost position
3. allow her to blog below that in the traditional fashion

If you look at the site now, I have modified the wp-content/themes/soothe/index.php file with the insertion of the original text of her first post—as a stop-gap in reaching our goal. Downside is that I cannot figure out a way to allow for comment posting on this “frozen” entry.

Meanwhile, I have “draft”-ed the original entry (which still holds the comments) so that it does not appear twice (first as an insert to the index.php document, and second as the original/oldest post).

Any clue as to how I might accomplish this goal all within WP?