Kidnapping is a standard tool for Mexican drug cartels. I live in houston and we have had neumerous drug related kidnappings in the last few years. Most of the kidnappings or murders related to drug trafficking are easy to spot. A few months back a breaking news story about a body of a teenage girl found in a vacant lot that had been dead for several days. Within days, she had been identified and by then it came to light that he dad was missing. The news reporter was standing in front of their house doing the report. they showed a picture of the dad. I told my wife they will find him dead and I guarantee, it over drugs. They lived in a 400 thounsand dollar house witch there is like a 2million dollar house. I dont care where you come from, if your still wearing pointy boots and a straw stetson, you dont live in a house like that unless you are tied up with the drug trade. 2 days later they found him burnt inside his truck. They found his wife in mexico. She was probably there transporting money, or picking up drugs. A week later, they arrested his killer. A Mexican hitman for a cartel. Im not sure how they know, but probably because he was already part of another investigation, but they say he had been transporting money for a cartel between south texas and noth of houston. He must have come up short.
The truth is, you dont even have to be that deep in it, to have them kidnapp as a means of extorsion, or leverage, one of your family members. You could be way down the food chain even as small is an actual small scale dealer. Its their way of sending a message. If you debt or mishap what ever it may be, they are probably going to kill you anyways. As for the girl and her dad, the PD said she had been brutally raped(very likley in front of her dad) then her throat was slashed. He was tied up in the truck and burned alive.
From the initial reports of this story, I have leaned towards her being kidnapped because of drugs. Most likley someone close to her, and not her directly.