No its not normal for a dedicated broody!! Did you move her to a new nest and put these 8 eggs under her?? Another hen might have been on her nest so she took a egg and moved it to another nest.When people talk about abandoning the nest what does that entail?
I put 8 eggs under a broody hen last Saturday. She got off them and went into the yard the first day for a few hours, another hen went in and laid an egg there and broke one of the fertile eggs. Every day she leaves the next for about 2-3 hours and walks around the yard. Is that normal?