Well, so much for it, I doubt time because it is a hobby, plus cruelty to animals is doubtful because for all most people care you can stick a live fish into a pot of boiling water and it won't matter, people these days just don't care for God's creations... Honestly, just try to get the tank back from the store, and try to get whatever money you can and labor for retribution, hopefully some jail time too. Oh, and also, try to be as honest as you can, honesty will be rewarded in the end, and a just heart in the face of someone as cruel as this will prevail. (BTW, I think she should get hard labor for it, jail time would be too easy)
You have my support in this, I'm sure any of us would be willing to come to court with you and tell them all that not only did she take so much away from you, but also from your livestock, that's just not right.