Martha looked at the photo of Rose she had stolen out of the Doctor's room. She saw the lovely blonde locks, shimmering in the sun like miniature diamonds. Rose was smiling at the person who was taking the picture. Martha was sure the person she was smiling at was the Doctor. The look on Rose's face said that she loved the Doctor.
It wasn't fair, Martha thought slowly. Her mind was moving in a very strange way. Her thoughts were sluggish like they had to travel a long distance inside her head.
Something wasn't fair. Martha knew this somehow. Then she knew what it was. Martha loved the Doctor but he would never love her. He loved Rose! Martha kept trying to get this through her head. She wanted to tell the Doctor how she felt, she wanted to make him love her so much. She knew she could make him happy.
She could make herself look like Rose! The Doctor would be sure to love her then.
Martha went to the console of the TARDIS and looked in the computer. There had to be a planet somewhere that could change her appearance to anything she wanted. She tucked the photo of Rose in her pocket so she could use it to show what she needed to be like. She wanted Rose's golden beauty and the Doctor's love. And she would have all of it!