The Question and Answer section for Libation Bearers is a great resource to ask questions, find answers, and discuss the novel.
Apollo wants Orestes to marry Hermione so I'm thinking he goes to Argos with her.
I don't think so. She had planned, along with others, to avenge her father by killing her mother. She encouraged Orestes to kill her mother.
Yes, She dreams that she gives birth to a snake that drinks her blood.