How can I get a Copyright Transfer Form without notifying my advisor?
This makes me sick (sorry). While I may understand your motivation and enthusiasm. But   betraying your co-author is not an acceptable solution. All co-authors need to agree on when and where to submit. Most likely, she knows better than you where the work should go. Moreover, If you planning to continue research after graduation it is better to keep good relation with her (at least you will need a recommendation letter written by her). You can continue your hidden game but no one would guarantee the outcome. She may even ruin your graduation. You need to have an honest discussion with her and make a decision. Tell her why you want to publish. No games. People tend to publish years after doing research/graduation.