Um, Isis is Egyptian. For Roman, you have a choice of Juno, Venus, Diana, Hecate (originally Greek), Minerva and maybe others; that's all I can remember from high school Latin. I would hazard a guess that that statue is Minerva, but I don't really know.
....though Isis was an Egyptian Goddess Rome was full of knock offs of the same and others throughout history prior because there were many new gods from distant civilizations which the Romans learned about and didn’t tend to think that only their gods were the right ones rather that those gods and goddesses watched over other parts of the world and whom they had simply not yet heard about. And so as they learned about these new gods, new temples were built to these new arrivals in the Roman pantheon....ISIS was one of the many.