We still dont have any info about her husband! Saras's dad married guman instead of her after saras's mother died, maybe thats the issue but they still have not cleared the whole thing yet.
It is not yet revealed...but we have got a general idea of what may have happened...
dukhbaa might be wanting to be laxminandan's 2nd wife, but it couldn't happen bcoz of ghuman...ghuman might have created some drama and trapped laxminandan in her tricks