Hi K.,
It is so great that you nursed this long. I began seriously weaning my son at 21/22 months but didn't actually stop nursing until he was 30-32 months.
How you wean depends on your temperament. At 22 months we offered him his own big boy bed in his own room but he was free to get up (and still does) anytime after my husband and I are asleep and join us in our bed. When we moved him to his bed, we told him no nursies at night, just during wake time. It was also becoming an issue with his teeth to nurse at night. I would tell him before bed that there were no more nursies at night. If he woke up, I would offer him a sip of water and let him cuddle my breasts for comfort. I would just whisper soothing words and songs and tell him what a big boy he was. I laid down with him. He would cry a little bit but go back to sleep. That's what worked for us. Eventually, he stopped waking up. At that point he got to nurse in the morning and then in the evening, for as long as he wanted.
Then, when he was 2, I went back to work full-time and cut the nursing to just once, before nighttime toothbrushing and bed. I did that for 6-8 months. It helped us to bond each evening when I came back from a long day away. I saved that nursing until last to cut out because it was his most vulnerable time of day--when he was most tired. Your little girl will probably have a different rhythm. During that last daily nursing session, I started teaching him about time, letting him have 10 minutes on each side and working those minutes down down down over the course of several months. I would tell him "nine minutes left, 8 minutes left" etc. He especially liked when I would count the last 10 seconds and tell him that when I said "one" I want him to "pop off" the boobie. He liked that a lot. I also used a children's TV show, Curious George, to distract him and help with the transition from nursing to no nursing. I told him we would nurse during the show but when the show was over, nursies were over. 22 minutes tops. He was so distracted and amused he didn't care! Eventually we traded nursing during the show for cuddling. I would encourage him to eat a snack during the show so that he would not wake up hungry at night. Then brushing and bed! Then, when he was totally weaned, we cut down the number of television viewings per week and traded for an increase in story readings/tellings. Now he doesn't watch any TV because he is really into his books.
It is amazing what a process weaning is and how it ties into independence. It ties a lot into the sleeping through the night process, too. Really, you need to balance your needs with your daughter's. It works best for some people to do the cold turkey thing, and some people are on the other extreme with "child-led" weaning that goes on for years. I tried to strike a balance that worked for my family that was respectful of my son's love for nursing but also gave me the much-needed sleep and energy for my workday.
Best of luck and if you have any questions I am happy to give you more details.