Sorry if I came off a bit rude...that was not my intention...just trying to protect something secret
Anyway, I hope your surgury goes well and that talking to your Membership Chair will allow you some sort of say in voting. If all else fails and there is no way for you to participate in any of the votes, talk to your sisters who feel strongly against her and plead your case on her behalf. If you have developed a good relationship within the house, they may can weigh what you said over what they have "heard."