What does this mean? We had exposure to someone who tested positive 5 days ago

The other weird part is that my wife received the 1st moderna vaccine shot the same day she was exposed.

Found this via Google: "If you receive an inconclusive test result, it means that a small amount of the COVID-19 virus' DNA was identified in the sample you provided. However, the amount of virus detected was not enough to be a confirmed positive result. An inconclusive test result is treated similarly to a positive COVID-19 case and requires an individual to re-test. If you receive an inconclusive test result, it is advised that you self-isolate and complete the College's COVID-19 Reporting Form and wait for a contact tracer from the College to contact you." This was from a university website.
Why did she test? If she is showing symptoms, she might need a retest. I don't know if the vaccine would impact a test.

Ya I found the same thing

She took a rapid test right now and it came back positive

Since she has had at least 1 dose of the vaccine, shouldn't she be fine not to quarantine.