Can't send text to Android phone from my iPad Pro
I am not able to text a friend who has an android phone, and I don't know her carrier. My text does not get delivered, and I get the message, "text not delivered". When I select the "i" for information, it has an option to "try again". When I try again, it still does not go through. I am able to text her from my iPhone 6. When I go to Settings> Messages, there is no option to choose to send a SMS message. Thanks for any help.
iPad Pro, iOS 10.2