It was clear to her already that he was one of those men somebody had to take care of. He had fooled her for a few days into thinking he would do the taking care of, but that wasn't so. (17.4)
It's hard to tell sometimes if Lorena wants an equal 50/50 relationship, or, after having been in controlling relationships for so long, she just wants something different. Or perhaps she's just a product of the time, expecting a traditional relationship where the man is the caretaker. She will experience a few role reversals throughout the book.
"Mister Bob, he didn't know mares," Cholo said, remembering that ignorance had been his downfall.
"Nope," Clara said. "He didn't know mares." (92.53-92.54)
Cholo and Clara are talking about horses here, but Clara's response has a double meaning: she also means that he "didn't know women." Even before Bob was kicked in the head, Clara's relationship with him was strained, because Bob expected her to be a stereotypical subservient wife, the complete opposite of who she really is.