Don't know about a calla lily, but take a look at the new font here at Cute, it's all flowers, very frilly, looks like a wedding to me!! Hugs, Marji
There is a Calla lily font at the embroiderydk site. You have to join for (I think) $5 a month, and then you can dl to your heart's content.
http://www.embroidery.dk
that is what I did well worth the $6 if you have the time to dl the site LOL