Day 203-Looking for a way to text message Catheryn

We are hoping to find a way to text message Catheryn on her cellphone from my yahoo messenger account. What happens is that in between chatting sometimes we need to communicate that we will be late or unavailable to chat. The reason is that Catheryn has to travel to the internet cafe and her husband (me) is not available because of various reasons. This makes my wife a wee bit frustrated because she doesn't know until reading the email or his call to say I wont be there to late in the process. Since there are no landlines in her town we can't really put a computer in her room to chat. So the solution is to get a mobil text service or carrier to text message my honey in case I am not available to chat.