She's as upset as a jilted lover over Quinn's attitude and I'm afraid she's going to do something irrational.
Her demon lover was gone and her body covered with a sheet.
Though she concealed from him her intention of keeping him under her wing, Petya guessed her designs, and instinctively fearing that he might give way to emotion when with her--might "become womanish" as he termed it to himself--he treated her coldly, avoided her, and during his stay in Moscow attached himself exclusively to Natasha for whom he had always had a particularly brotherly tenderness, almost lover-like.
Physically at ease with him, she nonetheless had no idea how to talk to a lover who was neither one she chose nor human.
Deidre was being asked by the woman who stole her lover and her destiny for advice.