I have a final interview for an internship I didn't think I had any chance with, advice needed!

Basic background: final interview at an economic development consulting company, it's 60 minutes and she said a good portion of the interview will be scenarios (basically give me smth similar to the questions they get from their clients to see how I think), she has also provided two scenarios in the email to help me practice, this would be for an internship by the way.

I guess, beyond what I just said, what else should I expect/how should I prepare? I am going to prepare the most standard behavioral questions like "how do you handle conflict" "strengths/weaknesses" and so forth just in case she asks, I'm also going to keep practicing scenarios as there will be an impromptu scenario brought up, but is there anything else I should do?

Because it's me and maybe 2 other people (she said for the final interview they'd only be choosing 2-3 people to do the final interview) so I want to give myself the best chance possible. Any advice would help!