There could be her best friend who she might trust enough to show the secret hideout to at some point. Or perhaps a mysterious figure who is also aware of the hideout's existence and is either a helper or a threat to Angelina.
I'm not sure specifically what 'ellis stories' are without more context. It could be personal stories about someone named Ellis, or perhaps it's a collection of fictional tales related to a character or place named Ellis.
George might become more serious in some ways. Losing Fred could make him more determined to make something of his life. He could also be more protective of Angelina. Angelina, in turn, could become more empathetic towards George's pain. She might be the one to encourage him to open up more.
Well, there could be her neighbors in the wizarding community. They might bring over some magical potions or spells to ease her pregnancy discomfort. Her children's future godparents could also be part of the story. They could start bonding with Angelina and the unborn baby early on. And don't forget the family's house - elf, if they have one. The house - elf could be helping with household chores so that Angelina can rest more during her pregnancy.
The real story that inspired 'Changeling' was a disturbing one. Angelina Jolie took on the role of Christine Collins, a mother who had to endure so much. Her son disappeared and she was given a child that was not hers by the authorities. This led to her fight against the system. Jolie's performance added depth to the story. She was able to show the strength and vulnerability of the character. The movie not only told a story of a mother's love but also of the need for justice and truth in society.
Since I don't know the details of the Bianca Ellis Story, it could be a story related to her career. For example, if she is an artist, it might be about her creative process and how she got into the art world. Or if she is an athlete, it could be about her training and competitions. But again, without more information, it's all speculation.