Help handcent problem


i have the g2 and i installed handcent but have one problem i cant send texts to my wife i deleted her contact info then put it back and it worked for 5 texts and stoped but i did notice something but dont know how to fix.
When i look at list of texts everyone else i send just show there name on hers is name then phone number like this sue <1-123-123-1234> when it comes up that way i cant text her anymore how do i stop this
thanks in advance