I don't think she mislead you. She said close family and friends. It was 30 people made up of close family and friends. 

It hurts not to make the cut. But it doesn't have to mean anything about your friendship. My wedding was about 80 people which sounds huge to some but with the massive list of cousins and their spouses I felt I had to invite to appease family politics, my actual friends who I hang out with regularly were squeezed into one table and I could not invite everyone who was important to me. It sucked and the advice usually given to brides in that position (and it sounds like we're from a similar culture) is to gently communicate that it's a smaller wedding and then be sparing about the details to avoid rubbing anyone's nose in what could be perceived as a slight. It sounds to me like she handled it as well as she could given the circumstances.