Blood is thicker than water.
Was a lie.
That wasn't really the real quotes. It was probably something that was created by someone who wanted to curry favor to their relatives. Or at least that's what Bella thought. The saying, Blood is thicker than water is actually not the original quote.
The geniune quote says: The blood of the covenant is thicker than the water of the womb. It means some relationships that had been cultivated are more important than genetics. It means that some bonds are more important than the ones that were created by bloodlines.
Of course, this is very applicable in Bella's situation.
Bella's eyes were glued to the television that she didn't notice Mo Li who sat next to her.
"Satisfied?" His honeyed voice startled her.
"Ah?"
"What were you thinking?" he asked.