Seeing today's TV programme thing and tomorrow's precap one thing I know is for sure. Sandhya for that matter SURYA doesnt care about their competitiors. They dont mind sharing what they have with others. Reason is simple. They know that they have to prepare well and sharing knowledge with someone doesnt reduce their chance of winning. See how easily Sandhya was telling Emily they will watch programme together. There was no fear in her face , her smile was genuine.
From precap it is clear that Emily is going to Daisa's house to watch that programme alone. She is afraid. She want to win. Beliefs that if she shares knowledge Sandhya will win and what better chance to deny that knowledge to Sandhya.
Only people who are insecure about themselves can do such things. People who ahve self belief and belief in God doesnt care much about such things.