Them not wanting to use Wanda happened well before she was retconned away from being a mutant and Mags' kid. She spent 7 years out of comics between HoM and UA. Only making brief appearances in CC and AvX that weren't really focused on her. She was then killed off in UA, and gone for another 6 months. All of that was well before the retcon. Mags wasn't a presence in her life well before he took her away in AD. He'd come around on a rare occasion, manipulate her or try to and then leave. Her best family were the Maximoffs that raised her.