help!

Samirah • 😘 Future Neonatologist or Pediatrician👩🏽‍🎓
I'm 17 in drivers Ed, school, and will be working. But I also have a puppy which I love so much but my mom wants me to give her up because I have no time for her since I'm active. Am I selfish For not wanting to give her up? I love her to death and she's my first dog I can't see myself waking up without her. Does it make me selfish in a way? I cry whenever my mom tells she's giving her away and she's says one day when I come home from school one day I won't see her💔 I don't know what to do? I want her sooo bad but I just don't have time but the thought of never seeing her again breaks me down. My mom says she will but her on a fleece cover for me but it won't be the same as feeling her next to me. I want her to get a lot of attention but I want to give her that