Hey LB, my eldest son had a dummy. It really settled him down, he was always very wriggly and couldnt lie still enough to go to sleep. It was good in a lot of ways for him, he never shut up (still the same at 4) and if we were out and he started to get animated it would quiet him down.
We went through months of getting up once or 2ce in the night to give him his dummy back, the prob when it falls out in the night. Once he could find it himself that stopped. I didnt get rid of it till he turned 3, although from about 2 he only had it in bed. He put it on the side of his cot before he got out and didnt get it at all through the day.
Its a really hard one, i do think they are great at certain times and ive used them for all my kids but the last 2 i only used it a few times.
I would maybe try and settle till she is nearly sleeping and take it out. Worth trying for a while. Other thing is to take it away altogether. It will onky take a day or 2 till she gets used to it
Good luck chick
Gemm x