that happens more then often, it happened to me a long long time ago in 4th grade, a girl bullied for 2 years and then in 4th grade we became best-friends. but after that she kinda turned on me

Don't allow it. Obviously the bully just wants to be friends with your daughter for the swimming pool facility and the kids that go with it. It's not like you're teaching your daughter not to forgive people, but being bullied as a 9 year old can be traumatizing in the future. Good luck.

Is it worth your Daughter going through another year of being bullied, to not let her in the pool? What other options do you have, since you got no help from the school or her parents?

Well, here's my thought. New girl? Sounds like the new girl bullied because she didn't know how to handle being new. every child handles it differently. Making friends is tough at 9. My best friend and I met in 3rd grade. She was new, and bit me her first day of school... yes bit me. She just stood up in my wedding party this past january.
SO I guess let your daughter, who seems to be the bigger person in the relationship, show this girl what a real friend does. This could start a really cool friendship. You as the mom can watch closely (being a pool.. great excuse) and judge for yourself if this girl actually wants to be friends or not. Don't shun her out because of her mistakes. Sounds like this girl just needs love and friendship. Its the perfect cure to bulling. Most people aren't just born mean.

Hope this helps! Enjoy your new pool!!

If your daughter wants to forgive her bully why would you encourage her otherwise? I'm sure your daughter also remembers the tears as well but she has choosen to get past that and forgive the bully who caused them. I think you should let your daughter decided what she would like to do. If the bully turns out to be a bad friend as well your daughter will be smart enough to decided they should no longer be friends. I know how extremely difficult it is to forgive people that hurt the ones you love but take a note from your daughter and do the same.

From my experience last year with a girl bullying my daughter, this is how they work. This little girl did the exact same thing, made my daughters life miserable, then suddenly wanted to be her friend. It wasn't over a pool though, it was over a new pair of skates. It was over Christmas holidays and for two weeks the two of them were inseperable. Then they went back in January and things got 100 times worse. My daughter was almost taken away from me because of this little girls lies. When confronted the girl said she made everything up because now she had her own stuff and didn't need my daughter anymore. Please keep this bully away from your child. I really think it would be safer and less heartbreaking for your daughter.

My mother went through the same thing w/ my little sister. She did the whole thing you did about reporting the bully to parensts,teacher, ect. I even would go sit w/ her in lunch and let it be known to her bully that I wasn't going to put up w/ it. Well the next week the bully and my sister are friends. Why? Who knows. My mom said that just let it be b/c everytime she went to defend my sister about the bully or another girl, the next thing she knew they were friends. Things seemed to work out fine for my sister.
But I still had a grudge over the girl and I didn't trust the bully. I too remember all the grief she gave my sister and I can't stand her little two faced self. My sister had a birthday pool party that was going to be held at my place.and I told her that
girl was not allowed at my place. She ok but she too has a big heart and last min. I gave in and told her it was her party and even if I didn't like the girl she could invite her. The girl didn't come to the party though but she was invited and that said alot. If she would have attended I would have some ground rules about not having any fighting whatsoever to her and the other children invited. If that occurred than they'd have to leave and would not be allowed back.

Well you can try this out. Before you ever invite her to swim allow the "bully" to come over to hang out with your daughter (remember no swimming) see how much she "hints" about the pool. When she leaves invite her to come back to go swimming but tell her one of her parents MUST come with her to keep an eye on her everytime she comes over to swim, as your pool is not a babysitter.
As a kid we had a large inground pool as well and kids were always inviting themselves over to swim. My parents got tired of watching everyone so started telling all the kids that a parent had to come along. That cut down on all the kids who were there just for the pool.