如果对方说:What if your mum knows that you told a lie? 我该怎样回答(用英语)

问：如果你妈妈知道你说谎怎么办呢？
答：I will admit my mistake and ask her to forgive me.

你可以说：
well..my english poor~can you say it again?

who cares

I think I'll admit my mistakes to her.