Actually things make sense now. I believe that when Teja saw DSR kill that man in the market, she lost it and it probably confirmed to her that DSR was capable of killing someone without too much provocation. Then when she woke up from her fainting spell and realized that she was in DSR's house again, she started losing it again. She then scolded DSR about taking away someone's family member just to save his own.
In light of her secret being revealed today, it now makes sense why she apologized to DSR for being rude with him and getting back in his good books so that she can infiltrate the family with her sweetness and love, only to take her revenge and take them down.
And yes, we know that she will truly fall in love with Prem and so there will be some major love/hate scenarios. Both Teja and Prem will be pulled in both directions. The opposite of love is not hate. It's indifference. And love and hate hold many of the same strong emotions.
I feel bad for Prem now because he really loves her and she's now going to hurt him. So there's a good example of where your emotions aren't always trustworthy. You hate Prem for treating Teja badly in the beginning and now that the tables will be turned on him, at his most vulnerable state, his heart, his love ---- she will break him.
We still don't know why Teja's mom borrowed that money so I assume that the windfall from the dance competition will go towards her mom's debt.
On another note, I still feel like there is more to Teja's dad that hasn't been revealed yet and like DSR told her more than once that things aren't just black and white, there is some grey. Perhaps when she gets her revenge on them there will another secret about her dad that will come back which will confuse her line of revenge.