Being a member of WS has forced me to, painfully, reflect on what I would do if my child went missing. I honestly believe that if, God forbid, my girl was taken, I would be so desperate and feel so helpless, I would throw myself willingly at the police. I would do whatever they said, blindly, without any thought of future repercussions or accusations. I sincerely believe I would allow them to strap me to a chair and pull out my fingernails, if I thought it would convince them I knew nothing and make them refocus their attention on the real perp. Rationally, logically, I know that this is not the smart thing to do, but my need to have ANY and ALL help from people who may be able to bring her home would be so overwhelming that my own welfare would become a moot point. However, I have not had any previous run-ins with LE so I cannot say how I would feel if past interactions had left me with a bad taste in my mouth or with a less than steller impression of LE's competence. Eventually, if she were not found safely soon, I may start to doubt their ability, especially if they continued to focus their attention on me (and I knew I was innocent), but it would take time for me to hire a lawyer. While I agree from a purely objective stance that hiring a lawyer in these cases is a smart thing to do, I have to say, it does cast doubt in my mind.
That being said, I don't think, from the surface, mom or dad had anything to do with the girls' disappearance. I think the police are doing what they need to in order to rule them out. And, I think that the parents alerting MSM to their past legal troubles speaks volumes about their desire to bring the girls home safely.
I also think that in these cases the parents feel so unequipped to handle the situation that they begin taking advice from well-meaning relatives and friends telling them that the police have no right to do such and such and that they need representation. I think at this point the parents are floundering, looking for anything to hold on to, and hiring a lawyer may not have been their initial instinct.