Hey I'm sorry you haven't been able to find a penpal yet. I know there are some kids younger than me (I'm 16) on but it may take them a while to see this post. I think your best bet is to try to get in contact with some of the moms around here. I hope this somewhat helps! Just keep on looking! I'll try to look around and help find a penpal for your daughter.
Thanks for your help! I really appreciate it. Another Mom (who has only a son) said she was going to check at her son's school. My kid's are homeschooled, so I'm at a loss there.