Book: How to be both; Ali Smith

A woman called George....Ali Smith on art, adolescence and gender ambiguity in her time-bending novel......
The first story is about the Italian painter Francesco del Cossa. Del Cossa was a fifteenth century painter from Ferrara. The book follows his story but, touches on the unknown, including his sexuality, which becomes key.
The second part is about a sixteen year old girl called George (actually Georgia). At the start of the section, her mother has died. Her obituary described her as an economist, journalist and Internet guerrilla.
George thinks her younger brother, Henry, is gay and both she and her mother have a (different) female friend with the relationship flirting with lesbianism. George is pedantic and down-to-earth. Her mother is neither so there is a certain amount of mother-daughter clash.