couldn't just let a perp slip away and escape, but it has happened before (Nairobi mall massacre)...Maybe she had a quick-change disguise or something...

It's just one of the possible scenarios, but it's the one the police there have put forth at this point as being likely.

News reports at first were making it seem like she was in the store during the siege...

http://www.nbcnews.com/storyline/paris-magazine-attack/france-seeks-fourth-suspect-charlie-hebdo-terror-attacks-n283581

http://news.yahoo.com/paris-hostage-takers-partner-likely-turkey-during-killings-175022383.html;_ylt=AwrBJSC5g7FUJ1wARwrQtDMD

Boumeddiene entered Turkey Jan 2, may be in Syria: Turkish source

Ankara (AFP) - Hayat Boumeddiene, the wanted partner of one of the gunmen shot dead by police after three days of high drama in France, arrived in Turkey before the killings and may now be in Syria, a Turkish security source told AFP Saturday.

"She entered Turkey on January 2," the source said, adding that Boumeddiene had a return ticket from Madrid to Istanbul.

The source said she was believed to have moved on to the southeastern Turkish city of Sanliurfa and then to Syria but there was "no concrete data" to prove this.

The source said Turkey did not arrest her because of a lack of timely intelligence from France. "We do not have the luxury to prevent everyone entering without intelligence sharing," said the source, who asked not to be named. "If the intelligence sharing had been timely then she could have been extradited."

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Authorities believe she may have been involved in coordinating the attack - some kind of "go-between"/"middle-man".