If by lactose intolerant, you mean, your stomach doesn't like milk much (bloating, gas, etc), then this is generally something that starts at about the age of 7. So your DD wouldn't have it yet.
Ah, I've done a web search, and the problem generally starts, slowly, at 2.
At any rate, if you're lactose intolerant in the way that many non-Western-European people are, you shouldn't worry about your DD suffering with this yet. (And many people, including myself, have had great success reducing their lactose intolerance by gradually increasing their exposure to milk.)
Also, if you're already giving her normal formula, that has cow's milk in it, and presumably lactose as well.
At any rate, you can just try giving her some cow's milk and see how she feels about it, or you can try mixing formula and cow's milk for several feeds to slowly move over.