Once again, if the company was doing poorly and there were no discussions of an S1/merger, your theory would be plausible and her departure a major red flag. But adding in the facts of the company's growth and the S1/merger (refer to stockforce's post as to the players involved with RXMD including their investment bank), then your theory doesn't hold water.
The logical answer is she's not the person to lead them post-merger. And by your own words earlier you said RXMD has not produced a good return had you bought and held 5 years ago. Keep trying though.