You certainly bought into the Marc Klass "logic". Now ask yourself a few simple questions.
1) Do the police need Tom Smart's or even the parents permission to have sketch artists work with the girl? No. She is a material witness. Besides, he is the uncle not the father. Klass put the blame for not bringing in his favorite sketch artist on Tom Smart, which on the surface is bogus. No one in the media has even suggested that the police might have a good reason for not bringing in Klass' sketch artist.
2) Do the police need the Smart family's permission to solve this case? No. Since they have access to all of the case files and the prime witness, if they thought a sketch artist was warranted, you can bet they would use one. Here again Klass' contentions are faulty.
3) Why, then, haven't the police generated a sketch already? I can envision only two possible scenarios: a) they, having access to the witness, have determined that she didn't get a good enough look at the perp in the dark. They may have even tried to use their own sketch artists and determined that the results were unusuable. b) They may fear that they are close to nailing the perp and don't want the key witness to be influenced in any way. I can just imagine some sharp defense attorney claiming that the impressionalble, young girl was "influenced" to come up with a sketch that matched his client.
Bringing in the Klass artist would un-necessarily expose case information that the police may not want exposed i.e. the girl didn't get a good enough description.
As I suggested several days ago, they might have a sketch but be bound to pretend that they don't, per ransom demands.
You suggestion b is reasonable also.
They might have no description at all and be using the allegation of MK seeing the perp to stress him into making a bad move.
They may have already found her body, but withold the info as a litmus test, "only the perp would know."
The slavery possibility scares me.
Therefore you have these scummy, disgusting no-accounts coming into these threads (I would name names again, but I'd get kicked off FR like last time) and spreading the most vicious, mean-spirited, slimey gossip and innuendo about the Smart family.
It's just like in the early days of the Church of Jesus Christ of Latter-Day Saints, where good, decent law-abiding and god-fearing people--the Saints--were continually dragged through the mud, tarred and feathered, and even killed, as "monsters of depravity."
I get so furious reading the garbage poured into these threads it makes me physically ill.