Potty training help

Emma

My 3yo is totally capable/ready. She shows every sign in the book. She will sit but will not pee or poop (AT ALL) even accidents. She woke up at 6:30 and didn’t pee one time before her nap at noon. I’ve tried it all- stickers, rewards, lots of fluids, timer, you name it. At this point I just want her to pee, I don’t even care where.