First of all, she is your best friend. You must have met each other's parents at ordinary times, and his mother will feel very comforted to see you.

Second, as her best friend, you can't stand it for a month, let alone her mother. Try to comfort her and persuade her, which is also an outlet for her negative emotions.

Also, don't be too sad, you will suddenly feel lonely, but I believe that she will become an unforgettable memory in your life. ?