Travelling to Kerala with my Australian partner. Not really sure what places to visit.

Hi all! I'm visiting Kerala for two weeks in May with my Australian partner. We'll mostly be spending time with my family in Kochi but I also want to show her around and do some sightseeing. This will be her first time in India. Even though I grew up in Kochi, I only just realized that I haven't explored much of the state. Of course, the usual spots like Alleppey houseboats, Munnar and Varkala are great, but I also want to show her something beyond the standard tourist destinations. Any recommendations?