You might be interested to see this thread about my recent success with re-blooming a deeply-tropical species in chilly, foggy San Francisco.
Part of it involved moving the plant outdoors for the day, when cool nights were expected. Much of the rest of the time, night temps were no lower than days, and it stayed out.
When buds are forming, I wouldn't take a chance with leaving her out there on a too-cool day or night.