Maybe; i am not familiar with her case
Though in antiquity there was a different take on homosexuality (not that it was accepted by everyone, mind; but there are both polemics and praises of it in known works). That said, Sappho is closer to the archaic era than to the classical era. (born in the 7th century BC, that is pretty much the era of the seven sages and the start of colonizing of the west med)