she has already turn off all Gas stove valve and main valve then cleaned the kichen room.
After that she has seen small gas light at gas stove at gas stove no. 1 Then she gas get she turn off ang check the gas stove valve no.1-3 and Main vale again but didnot check
clearly.So that mean the main valve are turn on again and gas stove valve no. 3 didnot close tighly.