Women do not like clingy and needy, they like a challenge. Now is she living with you or two (2) different places? How old are you? Are you two having sex on a regular basis? You gave us very little to go on. Here is my 2 cents
She could just being considerate, which is a low probability in most cases. She is losing or has lost interest, aka her interest level in you is below 60% which means you are toast. You are at the point of no recovery, time to move on.
Now you may have a chance if her interest level is not that low. Stop being clingy and needy become a challenge. Become distant however friendly and not always available. Don't question her every move which I believe you have been doing. Do not be predictable/
Good luck, good hunting
“Better a true enemy than a false friend.”