Sentence 1: Mimi could never leave her hair alone. 
 Sentence 3: It had the texture of straw and began to fall out 
 Sentence 4:  She started making wigs in her spare time 
 Sentence 5:  She proved quite good at it, and people paid big money for her wigs 
 Option 1: By the time she was 16 she was already dying it all kinds of colors. 
 Option 2: By the time she was thirty, she'd dyed it countless times.