The Practitioner by Ronica Black
Johnnie Hamilton has conquered a lot in life. An anxiety disorder, loss of her business, and homelessness have been difficult to overcome. But Johnnie has come through the other side to find success as an artist. Now, however, she's lost her creative drive and she's struggling to produce.
Elaine Taylor has an interesting job. She's a "creative practitioner," known to awaken her client's creative side by using many different approaches, including a sensual or sexual approach. Most of her clients are male and she likes it that way. Women are the last thing she wants in her life, having lost the most important woman she's ever known, her wife.
Fearing she'll lose all she's worked so hard for, Johnnie takes her friend's advice and calls a lone number on a business card, steps into Elaine's office, and shakes up both their worlds forever.