What is the test for reasonable detention under the Fourth Amendment?

There is no dispute that appellant was detained for investigation. She contends that she was unlawfully detained. "A detention is reasonable under the Fourth Amendment when the detaining officer can point to specific articulable facts that, considered in light of the totality of the circumstances, provide some objective manifestation that the person detained may be involved in criminal activity." (People v. Souza (1994) 9 Cal.4th 224, 231.)