I have a dilemma and I'm hoping to get some opinions...I sold a bag to a buyer in the US (I'm in Canada) on Feb. 17th, the buyer paid right away and I shipped the bag for free on Feb 19th and sent her the tracking number. I used XpressPost with usually takes 3-5 business days with insurance. It has now been almost 2 weeks and the bag still hasn't arrived. I'm sure the bag is just delayed, but I can't file a claim with the post office until 30 days has passed. The buyer is now requesting a partial refund since the bag is delayed...should I comply with her request?