Not yet, and it's worth explaining why rather than leaving it a mystery. Once you click Next Question in a Scenario or Challenge, that question closes. There's no back button so there's not a way to go back in Hey Monika.
This is a deliberate build decision, not a missing feature we forgot: Scenarios are designed to run the way real client work runs, forward through a task rather than backward through a transcript.
We have been asked many times for a "back" button, but haven't built it firstly to keep the experience of progressing through a client situation like reality - and secondly because it's a huge build in our software, money we would rather invest in tools like Voice Mode and Email functionality.
We know that's a different experience from an exam, where you'd expect to check an earlier answer before moving on. If you're partway through a case study and need to remember something you were told earlier - a figure, an instruction, a detail from a client - that's the gap we're actively working on closing, starting with surfacing anything you'll need again later at the point you're given it, rather than expecting you to hold it in your head. We've also built full walk through step-by-step guides for our latest Scenarios.
What you do get: at the end of every Scenario, a full summary of your answers alongside the correct answers, so you can see exactly where you went wrong and why.
Use that review stage as your check, rather than expecting to interrupt the scenario mid-flow to look back.
There's no pressure to get a Hey Monika Scenario or Challenge "right first time", this is the reality of work experience, the more your practice, the more comfortable you feel when you see that situation with a real client.