It just might not like them, it has been proved as well that dandelion leaves should only be fed 2-3 times a week they are good for them but not as originally thought, have to tried clover mine absolutely love clover specially the pink flowered on. there is a good list of weeds on the torty section of the forum. Have you tried giving torty the dandelion flower, rinse first though hun thoroughly. Avoid fruits like the plague.
What kind torty is it?