So + predicative + subject expressed by a pronoun

e.g. She was so glad that she could not utter a word. – So glad she was that she could not utter a word.

 

B.1. She was so amused by his bland impudence that she laughed and overlooked his past mistakes (Mitchell). 2. He was so intent upon his reflections that he unconscious of approach (Dickens). 3. He was so friendly I was beginning to think he was struck on me (Dreiser). 4. He is so talented and so loved in society that I believe he is a general favorite (Bronte). 5. There were so high that the breeze did not bring them the grumble of the surf below (Gordon).