Once Loki consented to making her invisible or at least unseen Gamora relaxed and smiled up at him. "Thank you!" She took the drink from him with an uncharacteristically peppy attitude, and sipped on it. "Hmmm thanks. It's good!"
As for whether she was enjoying the job or not, it all depended on whether Peter was looking at her or not. She shrugged. "Well I'm not sure. I am not a dancer, Peter is. But he got me into it and honestly, we... uh, I need the money."
A clue, however, could have been how Gamora downed her drink immediately after replying.
"Are you enjoying the..." She motioned around herself.