How can I treat my daughter like a princess?

My daughter is 3 and we just lost her Mom recently to a long fight with cancer. She's my little girl and she deserves the best. I don't have a lot of money and I'm hurting a lot right now too, but I know her wants and needs come first. How do I make my beautiful baby girl feel like the princess she is? I only want the best for her and I don't want her to cry anymore. It's breaking my heart to see her so sad and lonely. I have talked to her and I kiss her, hug her all the time, cuddle with her and tell her how beautifdul and wonderful she is, but I don't know what it does. we have tea parties and play house, go to the park, color, draw, watch disney movies, but she still ends the day in tears, wishing for her mommy to return. what can I do?