"Has left" - if she left on good terms she'd have done a last show - if that didn't happen, she likely had no choice in the matter.
Leigh Richards was no doubt the longest running country radio personality in Philadelphia history, starting in the waning years of WRCP when it was on AM 1540 only; when they went oldies in 1981 she went to WTTM 920 Trenton (both as Sarah Louise), then went to WFIL in the "Boss Radio" revival & was Joey Reynolds sidekick/foil a short time, then turned up at WXTU middays shortly after their 1984 switch to country. I think she was at WPST 97.5 in the '70's before she was at WRCP.