Zora is getting super attached to me...

My GCC Zora is getting really clingy with me. When it's bed time, she will not move. AT ALL. Stay clinging to my arm until maybe 10 minutes later she finally gives in and goes in her cage. She seems to like out time a little too much. I have him out at say, 9 am, and put them to bed at 8-9. (Is this too late?) I go out of the house for say 2-4 hour every other day. Whenever she is on my hand she climbs right to my head/shoulder. Every time she starts climbing up, I take her off and put her back on the finger. If this continues, she goes back on the play gym. And if she is sneaky and gets on my head/shoulder, she'll give me a hard warning nip saying she doesn't want to come down. Bella, my other GCC, does not have this problem. Whenever I leave her line of view, 40-50% of the time, she flies to the floor and comes after me. I think I know my mistake, I've let them out too long each day, but how do I show her to accept what she calls her 'jail'? And is there anyway to stop being obsessed with climbing up my head? I really appreciate any tips! Thank you guys.