She could...but then tomorrow there would be a thread on the DIS titled, "Can you believe someone had the nerve to call me to ask if they could bring a buddy to DD's wedding when no 'and guest' was on the invite?"
Seriously, these wedding invitation issues can get so heated here on the DIS!
OP, if you really don't want to go alone, I'd just send a nice card and gift and have something else important to do on that day.
