Thanks for sharing. A question

Is the following correct?

過去完成時：   "have you finished your homework before you watched TV?" her mother asked her.   “你是做完作業才看電視的嗎？”她的媽媽問她。

過去完成時：   Her mother asked her if (whether) she have finished her homework before she watched TV.   她的媽媽問她是不是完成了作業才看電視。

 

 Should it changed to:

"Her mother asked her if (whether) she had finished her homework before she watched TV."