sleep issues are maxing me out

well their is no way i would put up with that, at 20 months they can learn that their bed is where they sleep, can u see youre self with the same problem when she is 5 years of age and u have a 2 or 3 year old doiung the same thing. the fact that she sleept with you untill she was 15 months wow, no wonder she has problems being on her own in a bed.