Wendy’s

I am a current employee at Wendy's and the manger on duty, Ms.Jerraka told me and another employee to clock off because they didn't have enough money to pay all of us and business was slow, and that we are the newest ones so that's why they chose us. I am just wondering if that it legal and can she do that? I really didn't want to go home and she still insisted that we go. I really need the money and she is cutting my hours short.