There is so much secrecy in AJMBHK that it creates needless conflicts. Laali herself keeps secrets when she shouldn't. She needs to give straight forward, honest answers to questions.
I noticed that first Ayodhya Singh coaxes Laali into thinking that she is like Meera, then after the double murder when Shekhar was in a stupor and not responding, ASingh comes to her in the jail to get her to help him out of it.
When Shekhar had such a bad and horrific response to her being there and falsely admitting to Ratna's murder, he rubbed off her Sindoor (I thought he was going to take her head off with it!) ripped out her Mangal Sutra and basically ended their marriage, Ayodhya Singh quietly stood there, letting her take the flak.
After seeing the April 13th 2010 epi, Ranvijay is in for a tight slap across the face I'm sure, and I think that Ma-in-law will try to find Laali and find a excuse to bring her into the Haveli and give birth there. The "90,000 Rupees" transaction isn't over, you see.
Loha just might allow that because he still wants the Waris to his crappy fortune. So the writers will try to have Laali come back and create conflict, because without conflict the show withers, let's hope they don't over do it.
Laali has to be IN the Haveli to create tension and drama and it can't happen if she goes back to Koyna.
Loha will still plan on killing her after the baby boy is born, but until then, he will tolerate her. Knowing Laali, with her self-esteem so very low, she might agree to stay on as a servant. After the baby is born, she may continue her role as servant and they won't tell the baby who his real Mom is.
Siddy is sure to get majorly grossed out at changing the baby's first diaper, so Laali will be needed for the baby boy to survive.
And he will cry and cry if he is away from Laali, so Laali will have to stay there, even tho the estrangement with Shekhar may continue till he hears that tape.