@UnlimitedSW22 I mean I can't really agree to that, sorry, but IMHO the evidence kind of speaks for itself. Her refusal of him due to the age is ridiculous. But oh well, you do you, I guess.
As for your Hogwarts reads the Inheritance Cycle. Just some suggestions, but feel free to ignore them.
Maybe you could/should change somethings. Have Arya be more compassionate/sympathetic towards Eragon and his feelings for her. I mean you could even have her agree to be mates with him, because she herself owes him a debt, and because she starts to feel things for him. (notice I didn't say they had to have sex or anything, but talking/kissing/spending time with each other is different and wouldn't be opposed.) They could do it in secret or in the open, and then in the end of Inheritance Arya could leave with Eragon, or he could stay with her, with a fast forward scene or more of the dragons being brought back, Arya as a rider, and little Aryas and Eragons running around.
At the end of the day though, the idea is yours.