Yes, You can give her cows milk.
Bear in mind her belly might get a little upset from it. But it might not.

Addit: They say you can start introducing normal milk from 9 months in small form (So breakfast and things like that to get them use to it) So i can see no harm in you giving her a bottle so early. Just watch out for allergies (Is there anyone in your family with an extreme milk allergy), just like anything when you give it for the first time. And She might not like it due to the taste.