My baby is also ten months old, and naptime has become harder than ever. I think they are at an age where they understand what they can do to get you into the room or to get them out of bed. Our main problem is that my baby stands up in his crib, cries, and won't lay back down... So I know how you're dealing with an exhausted and sad little baby.
Anyhow, I have tried multiple tactics; you might also to see if they'll work:
- spend 5-10 minutes holding your baby and rocking her
- read stories in a quiet setting
- leave the door open or try closing it, whichever you don't do normally
- give her the pacifier during storytime to keep her calm and settled; she might not throw it if she doesn't feel like you are leaving her anytime soon
- sing soothing songs or play some music or white noise
- keep her in her crib but stay in the room for a few minutes so she can relax and still see you
- let her cry for a few minutes without having her binky; then maybe she'll want it when you give it back
- use a security blanket or something like it, something she can suck besides her pacifier
- make the room darker
The main thing I've noticed is that it doesn't seem to help to re-enter the room every 5 or even 10 minutes. Then your baby will keep up the same behavior to get you to come back. I would work on a naptime routine that really helps her to get sleepy, and then take it really slow when you leave the room. Let her cry as long as you feel will work. Good luck!