After I messed up in the first week, she really seemed to like her new home. After a few days, when her roots had settled in, I guess, she started growing bigger and bigger leaves quite quickly.
I did not water her, but instead sprayed the soil with water in the morning and the evening. At first I only sprayed the center of the pot, where the roots are. Later on, I started spraying the whole surface. I did not measure the amount I sprayed, but it wasn't much. Maybe 100ml per application (max).