It seems to me that Arunita has taken the opportunity to go home for Durga Puja. She was only 7 hours away from Bangaon by road, and nothing else lined up for about 7 days i.e. till tomorrow. Plus while she has been off social media, Darshini haa been visiting garba alone.
In fact, I hope she took this opportunity and gone home. It has been several months. I think she last went home on her birthday in Jan.