I don't know the brand of awning on your Brave but on my Zip Dee awnings with an aluminum wrap the aluminium wrap is fastened to the another aluminum extrusion, mounted on the coach, with a special fabric hinge. I understand the fabric hinge is about an inch wide and has a large bead on both sides of the hinge. Another way to describe it is that it looks the number 8 with a one inch piece of fabric between the two loops. If that fabric is torn....thats where the water is coming from. The fabric hinge is pricey. about $4 a foot. You might go to an awning shop. They may have the material and the know how on how to replace it.
Happy trails,