There might not be enough sperm to go around. Privately, many conceiving lesbians strike deals with gay male friends to become either a co-parent or a sperm donor with no parental involvement. Such a deal is unlikely to be replicated in a Victorian medical setting. A lesbian cannot take her gay male friend to a doctor requesting to use the friend's sperm, unless he cares to be celibate or a liar. Victoria's Human Tissue Act forbids males who have engaged in homosexual intercourse at any time over the past decade to donate sperm.
Victorian law forbids sperm importation, too.
Lisa Meldrum's smile lit up a cold day yesterday. But it may not be so infectious.