How many times do we have to go over this.

If you return to the country of your birth, they will recognize you as a citizen above all others, and act accordingly. 

Canada would do it..consider someone born, and raised in say Estevan Saskatchewan. Moves to Spain when they are 25, marries a Spaniard, and takes out Spanish citizenship. 

20 years go by, this person returns to Canada, even temporarily to visit relatives, and allegedly commits a crime as defined by Canadian law.

Does anyone really think that if the Spanish government asked for their immediate  release, that Canada would comply? (especially if it were a serious crime?)

What is really galling, is that the Daughter has stated "what is the point of a Canadian passport?" (If it does not guarantee your security while abroad)

Sorry, NO passport guarantees that. And if anyone buys into it for that purpose, hopefully the Canadian government creates a refund process.