Having mixed company for Thanksgiving?

My husband and I have a small t-giving every year. His brothers wife cam into contact with her daughter that she gave up 20+ years ago. The daughter is gay, and has too much PDA for us , with her GF of 30 years her senior. This daughter also does not believe in God. We're what you would call "very catholic", we always say Grace at our holiday meals, I would like to actually eat my T-giving dinner this year! Is it wrong to not invite these people?