Not so sure about that… Plenty of people have kept mothers for years. There’s root pruning and a different nutrient schedule involved, but the clones cut are decent quality. I could certainly see you planting a long running sativa now, keeping it inside till frost has passed and having a monster outside, as long as you did some pruning and fed proper in the winter while inside. When I grew outside in the past (and even this spring) I get the ladies to at least a foot tall to stand a chance, but thats not starting them too early in the spring. Keeping it in veg stage thru the winter would likely produce a very branchy plant come spring…
I mean, if you FIM the shit outta it, its gonna be larfy bud. but if ya train it proper?