I think it’s because Greggy (who's apparently loaded but lives in a boring non descript house and dresses up like a 90 year old tramp, buys Aimee ugly, sensible boring cars) doesn’t want to feature in her TT’s and I assume Carol feels the same. I would be mortified if I was Carol, her kids must rip the piss out of Aimee. She probably wants distance from her but is putting up with her for trampy Gregg’s sake. Aimee probably does the same so her daddy doesn’t get cross and stop any income he gives her