Possibly only available to UK residents, but I've just seen that Stevie is the guest on Johnnie Walker's Sounds of the 70s show on BBC2 Radio tomorrow (Sunday 28 Aug) afternoon at 3pm - 5pm.
Presumably already recorded, as the paper says that she talks about the emotional strain of her on- and off-stage relationship with Lindsey, her battle against drug addiction, and her solo career.