Honestly, if you feel really confrontational, sit her down and make it clear that what she did was ******. Tell her straight out. Then say you know about her and the cousin, and have chosen not to tell the family because you don't treat family like that. Be the better person, let her know, but don't threaten her. And let her know how much she hurt you by telling. You were insecure, confused - and she used that to mock you.
The 49686, Traverse City, Michigan weather is going to be heavy snow. 49686, Traverse City, Michigan visibility is going to be around 16 km i.e. 9 miles and an atmospheric pressure of 31 In. The daytime temperature is going to reach 9 Â°f and the temperature is going to dip to -2 Â°f at night.
That region should easily get four inches of snow, with some areas getting up to eight inches of snow. We will have to wait and see exactly where the heaviest band of lake effect sets up, but right now it looks like the east side of the Traverse City area would be in the heaviest band of snow.