I say you should keep her
Lexi had a pup in her first litter I wanted to keep so bad and she was the last one to go. I had told my husband when the people came for the second to last one that I may just have to keep her. Well they took both. I get pictures regularly and I see momma in her eyes. My Lily also has a lot of her mom in her. But for some reason that one really got to me. So my vote is keep her They are all adorable