Jessica had mixed up and thought that but what she didn't realize is that the compound she thought was testosterone but estrogen. She realized that she couldn't give it to Rick because it could cause him to regress even further. So she decided to use Brandon to test it.
She called Brandon and she knew he was trying to bulk up to get on the football team. He came down into the basement lab and asked what she wanted. Sh e told them that what she had made was a new Testosterone enhancement which is undetectable with test but that she didn't have a test subject.
She told him by the time he went to school he would be solid muscle. She then said that if it works that there should be some results within a couple hours.
Brandon had drank it and then he was feeling a little tried. What happened is that after he went to his room and laid down and had fallen asleep. What started to happen is that when Brandon was sleeping his body had started to do like Rick's but as he was regressing his body had started to become feminine but at a slow rate.
It was a hour later when Jessica had went to check on Brandon and she sees that the formula wasn't right because Brandon hair seems longer and that his face seemed feminine. But she also noticed that he seemed shorter.