Use "stammers" in a sentence

1. She stammers when she feels nervous.

2. She stammers that she could be a geisha again, or better, she could die.

3. Haltingly she stammers that she could be a geisha again, or better , she could die.

4. Mr. Alongo,Our marvelous teacher, Mr. Alongo tries teaching the children new English words, forgetting that he stammers