O.K. let's try this again.
Mikado said "She was there with one friend, who left before she tried to." I agree, the way things are posted makes all the difference. However, in this instance it's simple English construction to infer that the daughter was with one friend , that friend left before the daughter tried to [leave]. Simple English construction rules.
Everyone suggesting that the father speak with the store owner must have missed the fact that this has already occurred and any further attempt can be seen as harassment by the father or intimidation. Better for a third party to interview and attempt to determine the facts without emotion.
As for harbor, I agree with most of your assessments, especially regarding the intervention of the police (or lack thereof). However, from only the facts posted here and the progression of events, I can conclude that there is grounds for a third-party investigation of proximate liability.
Even the RETAILER’S SHOPLIFTING PREVENTION GUIDE, Prepared by the Washington State Crime Prevention Association, in conjunction With the Washington State Retail Council, warns retailers in the state to follow strict guidelines based on RCW 4.24.230.
It is, first, of utmost importance to emphasize that the detention of any shoplifting suspect should be based upon first hand observations by the merchant or his/her responsible, authorized agent. The intent of the suspected shoplifter must be clear, preferably including such elements as concealment of the item(s), nonpayment in any manner, furtive actions, and leaving the premises. These elements combine to show criminal intent and thus, probable cause to detain/arrest. (1) A shoplift detention lacking strong elements of probable cause, as mentioned above, may be a weak criminal case and certainly would be an ill-advised civil restitution claim. The apprehension should have no legal flaws.
While the shop owner does have the right to detain for a reasonable suspicion of shoplifting, based on the facts presented here (including the fact that a shoplifting charge, neither criminal nor civil was never issued) this was not the case in this situation. And a shop owner, especially this one, falls short of his/her legal rights without proof of the suspicion.
Shop owners do not have a carte blanc to detain. Not for suspicion of trespass, not for suspicion of 'maybe doing something' or for anything under the statute other than 'reasonable suspicion of shoplifting/theft'.
Quoting further from the Guide,
If the suspect refuses, explain that you wish to avoid embarrassment and would prefer to discuss the matter in a private office. Do not force the suspect to accompany you. Instead try to gather information from the suspect and call the police immediately if the shoplifter continues to refuse to cooperate.
There is a very good reason why loss prevention experts follow strict guidelines in the detention and apprehension of 'suspects'. And it is simply that to sustain a criminal/civil charge of shoplifting, criminal 'intent' must be proven by the evidence.
Detention cannot be used to determine the evidence and the detention is not allowed to continue once the basis for the charge of shoplifting has been found, under statute, to be false.
If the shop owner, his agents or employees, suspected the girl of shoplifting earlier in the day, the prudent thing to have done would have to notified the officer on duty while keeping the girl under watch. That was not done.
And that is why this needs the scrutiny of unbiased eyes.