Theories about when she comes...

Why didn't Sandhya come when they were attacked after Mehendi ceremony? I thought about the incidents when she came and when she didn't.

I would like to gather more theories! Please add yours or what you think in comments.

1. During fire at himalayan residence

--> Sandhya did not come. Either because she wasn't completely awaken OR because she knew there wasn't any mortal danger to her?

2. Temple massacre

--> Sandhya did come. It was her swordsmanship that helped Devi parry the attacks with confidence but she still fell victim to betrayal just like sandhya.

--> It was when Devi lived through her 2 past mistakes - to die on the battlefield and betrayal

3. Swinford's ball (Most confusing)

--> Though there wasn't any mortal danger to Devi, Sandhya still came and stabbed Clara.

--> Initially I thought the goddess possessed her but then Sandhya was introduced later and it was revealed that she is possessing Devi....I suppose that was bcz of the backlash writers received due to inappropriate portrayal of the goddess...and hence it's most confusing??

4. Attack during the wedding

--> Sandhya came as there was a mortal danger to Devi

5. Night attack after returning to India

--> Sandhya came again, there was a mortal danger

6. Attack after Mehendi ceremony

--> Sandhya did not come. Is it then because she knew Devi could handle OR there wasn't a real mortal danger?? How does sandhya know?