S.R.
Hi Keddy,
This is just my opinion so please take it as such and my best wishes for finding a solution that works for your family. In my opinion it is a bit early to be expecting a co-sleeper since birth to be comfortable sleeping on her own in a separate room. Most co-sleeping kids I know didn't get there until 4 or 5 years of age. We have made a compromise in my house in that my son's bed is right next to ours. The room is cramped and doesn't look "normal", but it works for us. We set up the bed and just let our son (3 years old) play on it and decorate the walls around it with his favorite characters and such. Then we encouraged him to start out each night on his own bed. He would crawl in with us at some point most nights for the first two months. Then he slowly began to stay in his own bed more and more. Now he only wants to hold me hand sometimes to fall asleep and he stays in his bed (took him about 5 months to get to this point). (Mind you he was giving us signs that he was ready to be more independent in his waking life and his kicking me at night was getting really old, so we both had reasons to make it work. I don't think we could have made this change until he was ready for it because in the past like your daughter he would just guilt me into doing things or changing things back when we tried to push him into doing things he wasn't ready for yet.) This works for us because he can still feel secure with us right there, I can read bed time stories to him comfortably, I can see whats going on when he does get scared at night (which is pretty rare), and I can comfort him without getting out of my own bed or having to put him in bed with me and my husband.
You would probably need to still adapt the situation to your needs as it really sounds like what you want is for her to go to sleep before you. Are you expecting/wanting her to sleep in your bed without you or in her own bed in a separate room. If the issue is a separate room then you could try just a separate bed in your room as a transition phase for her to feel more secure and still allow you to have your own bed. If you are wanting her to sleep in your bed without you at first then you could try making sure that the bed feels secure to her without you there, like making pillow barriers (extra pillows under the fitted sheet) to help her feel more snug. Maybe a moving night light or GloWorm (something that is comforting) that she can look at or listen to when she wakes up and you are not there.
Good Luck,
S.