Were so happy its been enjoyable enough for you to test the game so thoroughly and appreciate your feedback!
It is definitely on our list to thoroughly check for memory leaks by the time the official steam demo and full game release is out. Although you have inspired my sister to fix the current leak xD
Currently you get star pearls for duplicate pets but we need to make that more obvious and are currently building out the systems where you can spend them :)
We are considering a "pity timer" but want to test crystal rates and costs first to balance the speed of the game.