The family members are likely to be the main characters. This could include the grandchildren who might have different views on the sale. Some grandchildren might be sad about losing the place where they had so many memories with their grandparents. The parents of the grandchildren would also be important characters as they are probably the ones making the decisions about the sale. There could also be the realtor who is involved in the process of selling the house, trying to convince the family of the best way to sell and getting the best price.
There would be the grandparents themselves, either through flashbacks or memories. They could have left instructions or wishes regarding the house before they passed away, which could influence the family's decision. Neighbors might also be characters in the story. They could offer their opinions on the sale, or they might be interested in buying the house themselves. And of course, there could be potential buyers who come to view the house, each with their own personalities and stories that interact with the family's situation.
The story could center on the process of selling the grandparents' house. It may involve the realtors coming in and assessing the property. There could be a lot of memories tied to the house that the characters in the story have to deal with as they prepare it for sale. For example, finding old family photos in the attic or remembering special events that took place in the different rooms of the house. The sale might also bring in new characters, like potential buyers who have different ideas for the house, which could create some conflict or interesting interactions.
There might be brave explorers who are curious about the haunted house. Also, there could be the previous inhabitants of the house whose presence lingers in a spooky way. And of course, there would be the people who are affected by the strange happenings in and around the house.
I don't have enough information to tell who the characters are. They could be a hermit who lives in the house, or a family. There might also be some visitors or neighbors who play important roles in the story.
In 'the sinking house short story', there could be a variety of characters. There may be the family living in the house, for example, a father, mother, and their children. Each of them could have different reactions to the sinking house. The father might be more practical and try to find solutions right away, while the mother could be more worried about the safety of the family. The children might be scared and confused. There could also be a nosy neighbor who offers unwanted advice or a helpful contractor who tries to figure out the problem with the house.
There could be a passer - by. This person might be the one who first notices the empty house and starts to wonder about it. Their curiosity can drive the story forward.
Independent authors can self-publish their short stories through various online platforms. This gives them more control over the process and distribution.
Obviously, Cameron herself is the central character as she is the one who is pregnant. House is likely to be involved as he is her boss and has a complex relationship with her. Chase, her former love interest, would also play a significant role. Wilson, as House's friend, might also be part of the story, perhaps providing some advice or just being a sounding board for Cameron.
Most likely, the main characters would be the Loud siblings. They are at the center of the 'Loud House' series, so in a fanfiction about changing the baby, they would probably play important roles.
Obviously, the Loud family members would be the main characters. Lincoln, being the main character in the original series, would probably play a crucial role in this fanfiction too. He might be the one to come up with plans to deal with the situation of being left in the dark.
The Burnell sisters are main characters. They are the ones who have the doll house and are at the center of the story.