Well if you clone her she will still finish flowering and thats it, your probably better of getting more seeds, plant a bunch of them to hope to find a similar pheno out of the bunch, also get a regular version of the similar photoperiodic version, hunt for a male, spread the pollen all over the pheno you wish for, then let seeds mature, collect, then plant again a bunch of them and hunt for the pheno again, after getting 2 examples of the pheno you wished for a male and a female, cross them for stability, repeat the process once again for more stability, and then remember to always have a container full of those seeds you worked so hard to stabelize and make sure you have a high chance of getting that same pheno wherever you grow those seeds, the more you hunt for the pheno and dispose or place the others somewhere isolated to avoid cross polination, the more stable you will make the seeds be.
Good luck growmie and stay lit, hope you can find a solution that fits you. 😉