Emailing charts and sets freezing iPad

I'm trying to share a chart and a playlist from my Mac to my iPad and it's freezes on the black screen with logo in the middle .
Apple Mail may be the problem . I was going to try Gmail but that will be a hassle to change preferences and I don't know how to do that so I'll use the sandbox for now. Sandbox is a problem for the forums because there are charts with lyrics in the playlist. I will try and delete it after I use it?
I can tell it's frozen because the return to mail button on the top left won't work to get me back to mail.
I tried turning the iPad and it crashed