1. In order to have a claim for retaliation based on hostile work environment, your work conditions must be linked to something that is legally protected, such as race, sex, age, or the like. Here is a list of the retaliation laws applicable to Texas employees:
In your case, it appears that you are suffering retaliation due to your involvement in the investigation involving the text. While you do not say what the text involved, unless it involved something that is legally protected, you do not have a case.
2. The incident involving your blouse was inappropriate, but standing alone it is not sufficient to make a case for sexual harassment. In order to rise to the level of sexual harassment, the conduct must be so severe and pervasive that it affects the terms and conditions of your employment. That single incident would not be enough.
You're all over the place with your story.
You need to discuss this mess with a local
attorney to figure out what's going on here.
THIS ANSWER IS PURELY FOR ACADEMIC DISCUSSION ONLY AND DOES NOT CONSTITUTE ANY TYPE OF LEGAL ADVICE OR LEGAL REPRESENTATION.