Be in excess of

1. Does "that" in the following text refer to "fantastical elaborations" or "psychic processes"?

2. Does "that are wonderfully in excess of her autobiography" mean "that are wonderfully beyond her autobiography"?

Text:

I see Bourgeois’s statements and her work as different instances of working through childhood trauma, the artwork being fantastical elaborations of psychic processes that result in objects and scenarios that are wonderfully in excess of her autobiography, although they could be said to mine it for inspiration.