College isn't for everyone. It does tend to be the most common time for someone to first move out of their parents' house, though.
I honestly think that she's more upset that you didn't come to her when you were simply just considering it.
Yes, there are cases where moving out doesn't work out. That's why it's best for the first place to get on your own is an apartment that you rent. It creates less of a commitment. Just remember that you can always come home if things change.