M.L.
Replace nursing cuddles with some other sort of cuddles. I used story time as my nursing replacement. She really wants that comfort, even though it is fleeting. I gave my son a sippy cup to drink on as I held him and read him a story, played with his hair or toes, sang him a song, played patty cake type games... Sometimes he would throw a fit and try to practically rip my shirt open... so my husband would have to pry him off at times, but mostly the cuddle replacement thing worked.
She is also old enough to not have to nurse in the middle of the night and to stay in her own bed. If she screams or cries for it, there are some good alternatives you can try, like telling her no. Dr, Sears is an expert and has some good advice here, especially #7:
http://askdrsears.com/topics/sleep-problems/night-weaning...