You can add some Javascript redirect on the tab page itself.
<script language="javascript">
top.location.href = "https://www.facebook.com/groups/bettyrockyourlife/"
</script>
Also, sometimes it's best from a UX standpoint to tell the user what is going on. Like setting a timer of a few seconds on the JS and placing a message on the page telling the user that the page will be redirecting elsewhere.