She is a pink pixie bonsai tree that is only 2 years old. She has not blossomed yet, but has been very healthy and full until last week. She has always been an indoor tree, but sits near windows. We moved at the end of July and she took to the move well. I prune her about every month. About 2 weeks ago I noticed teeny tiny little white bugs in her soil. They're small enough that I barely noticed them and some of her leaves started getting some spots, so I decided to repot her to get rid of the bugs. Last Monday I took her outside on the deck to repot. I cleaned her pot out , replaced all the soil with Miracle-Gro (which I have since learned is not the best soil for a bonsai tree), and to ensure all bugs were gone I rinsed her roots in the water from the spigot outside so she was nice and clean. I planted her in the soil and added water so I could pack the soil down. Two days later, her leaves started falling off profusely. Even the slightest touch or blow of air would make her branches bare. What few leaves she has left are turning dark and wilting. The tiny new growth are dried and dead. I was afraid maybe I have over watered her, although I don't feel I gave her any more than I had in the past, so for the past 5 days I haven't given her any water and the soil is still slightly moist on top. I do not have a green thumb, so I was proud to have her survive for so long, but I had planned this to be a lifetime tree, so any help will be greatly appreciated. I will add some pictures of before, the bugs and spots on leaves, and her current situation. Thank you.