Fastbuds FFNA2411 - Celia

I don't know what I've done to these fastbuds. I had 3 ffna to rest. If those 2 died at week 2. I came in the room and they were just doubled over and fucked. Celia seemed to pull through that unscathed but now at week 5 there is an abnormalitie in her stem where it thins to a weak knuckle and the grows out again. Well this is a weak spot on the plant and it feels like it is gonna snap over at that point. I have many other strains running all in the exact same environment same substrate same nutes and they are all on point. So I'm confused as to what the issues are ... Also I topped her last week and she has decided to grow a cola from the topping wound... Whatever ..this plant is just odd and I'm not sure I want anymore to do with it. But being British I can't leave the underdog alone so we will push on.. What a strange grow..😜