Invidiosa
Sylvia stares at her daughter standing next to that man, that *alien*. She doesn't understand what she sees in him. Skinny, no job that she knows of, and he seems to only have one suit. What does she see in him.
For the answer she only has to look at her daughter's face. She has never seen Donna so happy. Even with Lance, the man she was at one time supposed to marry. But there is something else. A knowledge that she is where she wants to be, where she is supposed to be.
She knows that she should be happy for her daughter but she can't help being envious of her. She has a man who obviously loves her, she is doing something that she loves and, as she watches the Doctor lovingly caress Donna's ever growing belly, it seems now a family.
Sylvia knows Donna's father loved her but he never looked at her like the Doctor looks at Donna; his whole world revolves around her daughter and the tiny being she carries within her.
"Mum, is something wrong?" Donna's question breaks into Sylvia's musings.
"No, just thinking." Sylvia smiles at her daughter and the man she has chosen to spend the rest of her life with and thinks that maybe, by the time her first grandchild is born, she will be able to finally tell her daughter how proud she is of her.