Therapist told me today was my last session and referred me to someone else..what did I do?

I’ve only been see her a month and I’ve opened up a lot. Never opened up to someone this much before because of my trust issues. I’ve been going through a lot of traumatic losses and health problems in my life lately. However today she told me was our last session and was referring me to someone else who she thinks is better. I’m feeling thrown off and upset because it took a lot for me to open up. Could I have done/said something wrong to make her do this? I’m never mean or rude. This makes me not want to see this other therapist now out of fear she will do the same. My social worker referred me to her so I’m just feeling hopeless about getting actual help now.