What is more appropriate, "to love someone enough to let her go" or "to love someone enough to never let her go"??

If you love that person enough, you wont ever let them go. You wont be able to. It is often said that "I love you enough to let you go" trust me. Noone can ever do that. Its an irriational answer to your problems. If your presence is something that your partner or anyone whom you are associated with appreciates, If its a symbiotic relation, If you really like to stay with the person then dont let him or her go. Yes but if that person gets the same feeling that you get for him/her for someone else, you might feel like i should let her go, you might say this to yourself that "I love her enough to let her go" ,"I 'll be happy as long as she is happy", "if happy ever after did exist" and all crap. But that is the just struggle. And if u tell all this to yourself and people and actually let that person go then you are just giving up. You need to fight for what you like. Persevere. And analyze. What is it that is going wrong. Why is it that you can't be that person. Work on it. It's tough at the beginning, But it's worth it in the end.
Well I guess Bob Marley has the answer to your question:
" If she's amazing. She won't be easy. If she's easy. She won't be amazing. if she's worth it you won't give up. If you give up you are not worthy. The truth is everybody is going to hurt you. You just have to find the one's worth getting hurt for."
Breaking up with someone is one of the hardest things to do. Especially when you’ve been with them for a long time.
It’s not just not having that rock to lean your back on anymore but the complete disentanglement of two lives can be very painful. You have to split up the possessions, discuss who keeps the kids and pets (where applicable), and then figure out how to get along without those people.
Sometimes it’s too easy to fall back into the same old routine. Forgive the past and ignore the pet peeves that drove you apart to begin with just so you don’t have to be alone. That isn’t always the best idea.