Monics--I have deleted your other post since it is a repeat of this one. Please do not duplicate posts, it makes it harder for others to follow and help when there are multiple posts asking the same question.
Are you trying to attach a document through your email? You will need to go to the app itself where you created the document on your ipad and look to the upper right hand corner of the page for a share option or a box with an arrow coming out of it. Press that and see if you have the option to attach it to your email.