In some fanfictions, Percy may go through a period of denial. He doesn't want to believe that his sister has really abandoned him. He might keep looking for signs that she still cares or that she will come back. Eventually, when he fully accepts the situation, he could either sink into depression or rise above it and focus on his own growth and development. He may also develop new relationships that help him heal from the abandonment.
Percy might be initially very confused and hurt. He may try to find his sister and understand why she has left him. He could also become very angry and feel betrayed, which might lead him to take some rash actions.
Percy would likely be very confused at first. He'd probably feel a mix of anger and sadness. He might start to question his own actions and wonder if he did something wrong to make his sister leave.
One possible reason could be jealousy. Maybe his sister is jealous of Percy's special abilities or the attention he gets. Another reason might be that she is forced to abandon him due to some external threat or danger that she believes will harm her if she stays with Percy. Or perhaps she has been brainwashed into thinking that Percy is a bad influence or a danger to her.
He might be initially shocked. I mean, he's used to all the demigod stuff, and then finding out his mom has wizard powers would be a whole new level of surprise.
Sheldon might initially be very confused. He's not very good with emotions and the idea of a new life coming into the family could be quite a shock to him. He may start to research about pregnancy and babies in his typical scientific way, trying to understand what's going on.
Female Percy could also be determined. Instead of wallowing in self - pity, she decides to use the banishment as an opportunity for self - discovery. She could set out on a journey to find out more about her powers or her past, believing that there is a greater purpose behind her banishment.
He would probably try to figure out what went wrong. Harry is a curious and determined character. He might start to recall recent events to see if there were any signs of his friends' discontent. He could also try to reach out to them, either directly or through mutual acquaintances, to ask for an explanation.
Eventually, he may reach a point of self - reflection. After some time, Percy might realize that his family's feelings are also important. He could start to reevaluate his actions and his priorities. In some fanfictions, this could lead to him trying to mend the relationship with his family, even if it's a slow and difficult process.
He might initially be in shock and disbelief. Naruto has always valued his friends highly, so it would be a huge blow to him. He could try to reason with them at first, asking them why they are doing this.
He might be angry at first. After all, he has done so much for Olympus. He could feel betrayed by the very beings he has fought to protect.
He might be really angry at first. He's given so much to the camp, and being kicked out like that without a proper explanation would make him furious. He could storm off, vowing to find out the truth and clear his name.