I'm Alice and I Need Surgery Help!

Hi, my name is Alice. I am a 6 1/2-year-old English Yellow Lab. 
One day when I was about 2 years old I hurt my leg, or so they thought. My mom took me to the vet and they said that I partially tore my ACL. So, they wouldn't let me walk far, and I had to take anti-inflammatory to make me feel better. After about 2 weeks the vet said I could go back to my normal life. But throughout the past 4 years I have flairs where I get more pain. Sometimes it only happens once or twice a year and sometimes I'll go even longer. The last time my mom took me to the vet, they did x-rays for the first time. 
Turns out there’s nothing wrong with my ACL. . . Apparently, I was born with VERY severe hip dysplasia. 
So, mom and dad took me to this orthopedic surgeon who said that my best chance of regaining normal activity and living a life without pain (which I don't even really know what that means, since I've lived like this my whole life) is have a surgery called FHO (femoral head ostectomy.) It is very expensive for the surgery and I will probably need to have both sides done.
They suggested that I get the surgery as soon as we can within the next few months since my muscle is getting weak around the area. 
They said after the surgery it will be a few weeks of recovery with physical therapy a few times a week and mom and dad having to help me up and not really doing too much in the beginning, but that I will eventually run and jump and play and feel better than EVER. 
I have a brother Cooper who I love and play with now, but I can't imagine how much better life would be if I could not have pain and be able to move my hips around.
My mommy has been though a lot in her life and I have been with her every step of the way and I know how much she loves me. I've been with her since I was 6 weeks old and she feels really bad about all of this. But she didn't do anything wrong. She always tried to make me feel better with bigger more supportive beds, and heating pads and medications. I know this is a lot of money and she doesn't have it, so anything that would help her out would make us ALL very happy. 
If I do not get the surgery I will live the rest of my life with these flairs getting more and more frequent and worse. The vet also can't tell mom how long I'll make it or how bad it will get. But I want to have the chance to be with her as long as possible! And to feel like a normal dog with no pain or limitations!