I'll Give You the Sun

I always include major spoilers (hidden), to help with my memory  issues. Read them at your peril!

Story switches backwards and forwards in time over a period of about 3 years. Secrets and traumas are gradually revealed. The ending is happy all around, and feels rather artificial and forced after all the drama and suffering. 

Twin brother and sister sometimes close, sometimes jealous and estranged, both want to get into art school. Jude does, Noah doesn't .  Their parents, married from when their mother was very young separate. Their mother is having an affair with the sculptor that Jude will eventually unknowingly work with. Her mother is killed in a car accident.