Trending @Cognizant; General question

Guys,

A married guy (Character A) and his wife (Character B) whose sister(Character C) is kind of betrayer, not good hearted, not a good minded person, and she is married recently. Now Character A and B going to go to C's home for the first time.

Character B gets sweets, snacks, fruits, and eatables for Rs 750. Is character C that much worth it or Character B is over reacting ?