I bought a mini rose plant for indoors. I live in Qatar in the Middle East. I kept the plant in the window but the tips of the petals, which were facing the sunlight, dried out. So I kept it indoors without sunlight. After another 2 days, I found that all the leaves in the bottom branches have dried out and fallen, whereas the leaves on the top are fine. Can you guide me in taking the best care for my roses?