Perhaps, but I think that you can cut this the other way also. Let's look at it in two ways. There may be many more scenarios but I'm going to limit my post to the following:
1: Someone close to the family or of importance in the community at large is behind this. LE, in their fear of exposing this person calls off Boylan until they can get their act together. By the time they do bring her in, MK's memories have been totally trashed and they are unable to even get a sketch. They promise Boylan that if she'll just play along they will be sure to bring her in on future cases.
2: MK didn't get a good enough look at the perp to produce a sketch. LE doesn't want to come out and say this because they want the abductor to believe that she did see him.
It may be simple, but out of these two scenario's I'll take door number 2. I think the truth is probably very close to option 2.
sandude...why not say right off on the first day...MK did not see the abductor....why this sham?....if they wanted the abductor to think he was not seen, the cops could have had that out thru all the media ,,,tv, and radio and print....thousands of times....so why didn't they?