How is it that Jonah is such an attractive name, and Yona is so, well...... Let's just say that this feminine variation is unlikely to catch on as the biblical classic has. Yonina form is only slightly more appealing.
It is very similar to the word 'yoni' which is the word used to describe the whole female reproductive area in texts such as the Kama Sutra. Some parents teach their daughters to use this word for their private areas. One to avoid!