1 and 2 don't make sense.
1 leaves out essential information. More than Ana(?) visited who?
2 suggests that the friends visisted themselves. I don't know what you mean by this.
3 says they visited Ana more than they visited some other unnamed female.
Perhaps you mean this: Ana's friends visited her more than she visited them. (They spent more time at Ana's house than at their home(s).
Student or Learner