Sorry about your experience.
Before you make any plans to move back to US, think carefully about reasons why moving to Scotland was a mistake. Write on a sheet of paper all the pluses on the left hand side and all the minuses on the right. Do the same with Florida. Discuss thoroughly with your husband. Does he agree, and will he move with you to US if you so decide? Getting his US visa will be a major undertaking, requiring a lot of effort and time (8-10 months is average). Is there anyone you can turn to, and are you in touch with other expats or expat groups? If you'd like to share with us some of your concerns, we may be able to help.