People keep citing the Arlene's Flowers case here in Washington State as an example of Christians wanting to refuse service to Gays. I think a little background is in order. The owner of the flower shop had been doing business with the gay couple for a number of years, knew they were gay and even sold them flowers for events like birthdays for each other. When approached to supply flowers for the wedding, she declined but referred them to another local florist who could comfortably meet their needs. They filed the lawsuit and the fireworks started.
https://www.aclu.org/lgbt-rights/ingersoll-v-arlenes-flowers
http://www.tri-cityherald.com/2015/02/20/3419458/arlenes-flowers-owner-rejects.html
Food for thought: do you want to be required by law to provide whatever you do for a living to a Kingdom Hall?
Edited to add: should she be required by law to provide flowers for this weekend's memorial service, even if she doesn't want to?