Mutants can get their grow pattern disrupted and give out unpredictable plants, she could become a photo, she could just take more time in veg or in flower, she could develop a weird structure, she can grow too much rather than staying at the breeder's expected maximum height, all sorts of things can happen.
I got one mutated this sog and decided to keep her, is about 1 month behind in flowers but its 2 weeks ahead in veg, so im not even sure here, but if you keep her and she makes it, she's likelly to become more resistant than the remaining plants, and she can possibly not even outgrow the malformation, mine still has a modified version of leaves but she's stronger than the rest and you can only hope for the mutations to alter the cannabinoid and terpene profile to the best but it most likelly will stay unaltered and could even be changed for the worst.
With that said, its up to you to know if i can afford to take the risks, u know the saying, high risk, high reward.
Stay lit growmie.