SHE must NOT love you, she still sings for me !
On a serious note, noticed Cortana vocalizes differently to different questions.
Ask her 'Who's your daddy' & you'll get Jen Taylor telling you it's Bill Gates, NBD; ask her 'Who am I' (in the same session), you'll get the robotic voice.
Cortana (Jen Taylor) prolly still has a limited vocabulary ... or this is in preparation for rollout to more countries (with more dialects, even the Brits - American English would sound rather peculiar !).