I love my Gf but she won't leave!!!?

Me and her have a kid together, and over the past couple of months dating back to 5 months after the birth of our child, she went on a cheating rampage, and time after time i forgave her for the sake of our daughter, but she steadily cheated even though i have a 8in package and 4 hour stamina, will kiss her from her face to her toes, still cheated so, i evicted her *** from the apartment and now she won't leave, HER MOM AND DAD LIVE IN A MANSION BASICALLY, but won't go stay with them, because she's claiming that she's not excepted over there, even though she brags about being spoiled by them, so what can i do, because she's also threatening to take my daughter away and i'll never get to see her again until she receives a papers and a court date from the judge, what the hell is that!!! Let me know what you think? As far as what i can do...