To eke out in this context means that it was difficult and took a lot of effort. Maybe because she was very nervous and she found it difficult to speak.
You can use the phrase in examples such as:
The toothpaste tube was almost empty but I managed to eke enough out to brush my teeth.
Or, it can mean to use something frugally or economically:
If we eke the toothpaste out, it should last us until we go to the supermarket at the weekend.