As her friend, you might think that this might be a good idea but rather, let her do it herself. You talking about these issues might be startling for them and they might not even take it seriously if they are of the ignorant kind which i hope they aren't. Instead, if it's possible for you to narrate this ordeal to your parents and let them carry the message, it would work like magic.
Two families will be closer and she would definitely be treated good.