Thats a tough one when it rains overnight! I just had the same kinda problem with the heat, a race against time, luckily I found her in time! When you loose a blood trail you can try a grid search, sometimes it pays off! This thread is a great learning tool and is reposted here year after year! We all read it and re-read it several times a season to keep our chops up! No disrespect but like I said a couple 4 hours isn't enough time in my eyes! JMO!

http://www.huntingnet.com/forum/tm.aspx?m=2272257

She might be dead in the area, what were your temps like???