I think you can change this girl a lot in 30 days. I'd suggest three things...
1. I'd start with putting a neck sweat on a few times a week for 12 hrs at a time. The last 3-4 days prior to the show do that each day.
2. Rinse, brush, blow, condition, brush blow.... each day, and find someone who can put a decent clip job on her.
3. Hit her with the feed bucket!

Not literally, but pour a lil more feed to her and be sure you are giving her some sort of all around top dress like sure champ or show bloom.
Be sure to post a show picture. Hope this helps. Best of luck!