I signed, number 52. I do think 25 maybe be a bit too much for the city, depends on her lot and coop size. However, think these no chicken laws are stupid and down right intrusive. Cities need to be made to understand, that there are benefits to all concerned in someone keeping a small flock in their backyard. Happy chickens producing healthy eggs, natural pest control....etc. Hope things work out well for the old lady.
Pam