Don't think Billi saw Zoya yesterday. In fact, I had a doubt that Zoe will not be able to get away with it but thankfully she did. Billi's expression was blank that time.
Btw, she made a very ridiculous statement when she came to congratulate Jammy. "Aap jaante hai na hum doctors pe kitna vishwaas rakhte hai." Yeah, right that's why she shouted at the top of her voice at the sight of the doc approaching her in last week's epi. 😆