Let’s tell more about that person you don’t want to point your finger at her. How to say that your partner can recognise who you talk about?

We can say this way, too:

The girl,  ..., was bad to me last night. She poured her drink over my head.

What is important here? That the girl was bad to her.

We can also make a sentence like this:

The girl, who was bad to me last night, is wearing the red dress.

Let's break it down:

What is important here? That the girl is wearing a red dress.