facebook doesn't let her click on people she doesn't know. How does she find facebook groups? New friends?

[lola]

If you’ve been prevented from adding friends on Facebook, it’s likely because friend requests you’ve sent have gone unanswered or members reported your contact as unwelcome.

You’ll be allowed to add friends again soon. only send friend requests and messages to people who you already know personally. Otherwise, limits may be placed on your account.
If you’re trying to make new friends, try connecting with Pages and groups that you’re interested in or signing up to play social games.
Her age can also limit who she can connect with.