My sister bought miniature roses for me last year, and they were doing very well until I put them outside and they got what I believe were mites. I got rid of the mites and brought them back inside, they seemed like they were doing better, but now some of the new leaves have started to curl and they're getting spots. I'm very new to plant keeping and was hoping someone here could help me figure out what is wrong with them and what I can do to fix it?