Hi,
The fiery fire scene comes across as completely illogical............but that's the whole point! Angad is all jumbled up right now...is an angry and eccentric mess...who needs the slightest of chance to get his hands on Kripa..go on a mad illogical frenzy.
He burnt Kripa's stuff in a fit of mindless fury.....since he can't bang that pixie's head, he is spitting fire an venom here and there........that's his nature........violent...impulsive and headless!
Angad wants to take away everything that holds meaning for Kripa...so, our dude put away her belongings into fire.It symbolizes his angst against her and against himself.
Furly is blind, darlings...people get hurt and cause hurt and logic is Latin there.