Hi Carol's mom,
All in good time dear will these things take place. If you do something drastic and she doesn't understand I fear she will be traumatized and learn not to trust you. There are enough things in the world to cry about but it shouldn't be about sleep.
You can ease her into this by taking definite and purposed baby steps. Do be structured and consistent. It could take a week or month. But she's one and is still getting use to the outside world.
Where does she take a nap in the daytime Do you nap with her? If so, then wait until she is really asleep and move her to her crib every day to give her an idea that things are going to change. You can do th same thing at night. Make bedtime earlier as well as naptime. Then when she goes to speep you will have some me time.
Does she do other things independently? Give her more independence with activities that don't require your up close and personal supervision. She is very connected to you and that is good. But she must be comfortable with her own company.
As for the rocking you are doing good. Rocking helps develop balance and rhythm and many other things. A johnnyjumpup could do the same thing but in an upright way. It could also wear her out. Which is a great thing to do. And it creates independance. Rocking also creates a bond between you. Children need to know what comfort is and where to go to get it when they need it. But do shorten the time you rock if it is too much more than 30 minutes. So, make a plan, use it make adjustments, and achieve you loving goal for Cora.
Oh yeah please understand that I am a creative person and give lots of ideas for you to choose and create for yourself what works.
Good luck!