Organisers GlosWomen are looking for another venue after the event in Brimscombe was cancelled.
Melle was racially abused by a transgender woman at a hospital after she addressed them as "Mr".
The bill seeks to change how transgender people are legally recognised and their right to self-identify.
Politicians throw out proposition which claimed current guidance has an "activist stance"
The UK Supreme Court's definition of a woman in equalities law has significant implications for transgender people.
The ex-SNP leader, who is stepping down from Holyrood this week, has defended her support for the trans community.
A former chief minister wants to delay a review of how children are taught about trans issues.
Currently trans people are able to use the facilities at the ponds for the gender they identify with.
The health service said young people who already receive the drugs will continue to do so.
