I prefer angry to other things. I do think email/texting tend to lend themselves to a sense of immediacy on the part of the sender which may not be shared by the recipient.
I actually prefer hard letters in such circumstances. I can send the information away from me with no concerns of whether the woman will respond or not and no worries about how slow or inadequate the response will probably be. By using hard mail - it takes that part out of the equation. And it keeps most of the control back with me.