I found an escargot begonia about two months ago and fell in love with it. I gave it to my mother for her to watch it while i was moving. She made the plant flower and it was quite happy. I took the plant back after a few months and put it in my window sill and let it hang out in full southwest sun, i then read the tag and realized it wanted part shade so it's in indirect sun. i re potted it into a bigger pot with a mix of potting soil and its well draining. I notice though that the leaves are rotting around the edges. Am I watering it too much? Do i have the wrong potting soil? I'm confused and i love this plant. Any help will be much appreciated. THANK YOU!!!!