thats funny you said that, because that almost happened to me the other day when i was raising my lights. almost had a damn stroke. and to the op,...thats a major infestation. i don't have any advice to offer (i have yet to get spider mites, fingers crossed), but taking care of that plant and trying to raise that clone,..it seems like an uphill battle to me. jorge cervantes and several others have a video on youtube about washing buds after harvest to basically wash your buds that have insects or powdery mildew. you could harvest what you got when its ready and and use jorge cervantes bud washing tech to get them cleared up a bit. and then i would make that harvest into some hash, edibles, some kind of concentrate to savor the trichomes that are there. and thennnnn,...i would clean the room as clean as possible, throw away that cutting, and start fresh with a cutting from a healthy mother. das just me though. good luck. man, ive been rambling tonight. i guess i did have advice to offer lol, sort of