Because she was expected to be intolerant of the Jews.
Explanation:
Erica was expected to have an intolerant stance towards Jews, where she would make disparaging remarks and that does not encourage a good feeling towards Jews. However, she comments positively, acknowledging that there are good and courageous Jews and asking if everyone is that way, or if only a few have this quality.
A run-on sentence is made up of two or more independent clauses that are not joined correctly or which should be made into separate sentences. A comma splice is the incorrect use of a comma to join two independent clauses.
