Downtown Miami to North Miami Beach Commute

My daughter is a recent college grad and just accepted a job in North Miami Beach. She went to college in Florida, but we are from New England and not very familiar with the Miami area. We’re going down to look at apartments in a few days. She wants to live downtown (or Brickell if she could afford it). According to Google Maps, her commute should be anywhere from 22-35 minutes depending on time of day. I’ve heard the traffic around Miami is a nightmare so I’m not sure how accurate this is. Is she is making a mistake by not looking for an apartment closer to work?