I agree with both Kim's and Karen's answers. I would probably approach it by sending a "Thank you" email if you haven't done it yet. Send an email saying that you really appreciated the time they took to interview you and learn about each other, and then add a note in the end saying you are looking forward to hearing from them about the next steps. By doing this, you are sending them the message that you are still highly interested about the opportunity and are also grateful of the people like them for providing internship opportunities to individuals like yourself. It shows a lot about your character as an individual. I hope this is helpful.