Speaking to Zap2It, Preston admitted that she enjoyed playing a different side to the waitress.
"My character is definitely grappling with something she wasn't ready for, so that's been interesting," she said.
"It's been a fun season for me, because my character has really been able to... they've given me some fun and more vulnerable types of scenes than the sort of funny-funny that I usually get. I think it's true for all the characters - they're really starting to give us a little more deepening. We're getting a little more intimate with the series regulars."
True Blood continues on Sundays at 9pm on HBO.