Should I give away my dog?

My heart is aching right now. I’ve had my dog for three years and she’s been my best friend. She stayed with me through all my breakups and hardships. I feel so alone and I feel like she’s my only friend. But I have to focus on my career now. I’m in my 20s and I want to go to law school. My parents can’t give her the life she deserves when I go to law school in a year. And there’s a family with little kids that wants her. She’s been to their house before and she loves it there. I know they are a responsible family and will give her an amazing life. But I feel so guilty. I feel like it’s not fair that I am doing to this to her. And I don’t know if I’ll recover. Any advice would be really helpful.

Edit: she’s a rlly good dog. Small cavapoo. She’s good with being home alone. The family will allow me one weekend a month where she can sleep by my home- until I go to law school. But I’m always welcome to visit and walk her they claim