Emotions are substances in the brain. That’s it.
This is the aim of Mindfulness, to disengage of these emotions and thoughts in order to see the whole picture, a more rational view.
You are able to see and understand the other person further more, because of your empathy. You have emotions. Some people (a few) don’t even have them.
You have them, in another way, you haven’t been hurt so deep. But, there’s a middle point in which you can begin to use these emotions as an alley by a balance with your rational mind.

If you give me to choose between a person who is emotional and a person who can’t feel emotions. I choose the first one by far.
The matter is to find a balance so your mind can’t lie you, even when it could try to protect yourself. Because your rational mind is also present.

It takes practise to get that.
What your therapist tell you? Or what techniques (s)he is teaching you?