My best t like questions...
When else, with whom have you felt this way before?

What is your t doing when you have this feeling?

What are you doing/thinking when you have this thought come through your mind?

Do you ever feel like she feels something else towards you (not intellectually know but feel)?

You say it has been a recent persistent thought, do you remember when it started and what was going on in your life/head at the time?

Is there anything that she does that annoys you or leaves you feeling frustrated or angry that you have not discussed with her?

How are you feeling towards her?

Is the feeling coming from a specific part of yourself, if yes what part?