I will list more than three because I am bad at making decisions...

1. Her rock-solid consistency - She is ALWAYS there, and always the same person. She doesn't change or shift or act all moody. She is always herself, completely.
2. Her care and compassion - She does genuinely feel compassion towards me, is genuinely invested in my care, and is authentically doing what is best for me.
3. Her vulnerability - This scared me for quite a while, but she is completely honest and open and vulnerable. I asked her at one point whether she would ever lie to me, and she promised that she wouldn't. She said she is really bad at it, so she doesn't try, haha. She is willing to share all of herself with me, and models openness by being open with me, thereby inviting me to be open with her as a response.
4. Her availability - I can text her any time of day or night and she will respond when she can. I can call if I am dealing with an emergency. And she reads all my texts and responds to almost all of them. I know she is always within reach if I need, and if I feel disconnected or clingy or scared, she will reassure me.
5. Her experience - She's been a therapist for more than 20 years. She knows what she is doing, and it shows in her capabilities in handling my case and in her comfort with everything I bring into therapy. She is incredibly skilled, and persistent with trying new things constantly to help me out.