thumb sucking

Sarah
Ok! So my daughter recently discovered her thumb, and I don't why but t bothers me. I feel like she no longer needs me to sooth her. Is it ok to feel this way? I try to stop it and g be her my breast but because she's not hungry she refuses it, so I give her the pacifier and she doesn't like it which she did before! Now I am scared she gets so used to it. Plus she has saliva constantly all over her mouth.