“我想让你妈妈的钱花的值”用英语怎么说？

i want to help your mother to get what she pays for.句意是帮助，而不是希望。get what sb pay for 物有所值。
i am able to cause your mother's money to be of great value.

The value that I want to let the money flower of your mother

I hope the money your mother cost is valuable.