Besides the tummy tuck... but that is water under the bridge now. You chose this procedure with your surgeon and knew the scar would be high and it is. But the shelf deformity between the different thicknesses of skin will have to be addressed down the road. Be patient now and focus on hea...
No two tummy tucks are alike, and in your case tightening the muscles along with liposuction will get you a nice proportion. There is artistry in how much fat and where to take it from, so see an experienced surgeon who is a board-certified plastic surgeon.
I am sorry to hear about the complication you have experienced. Assuming the open wound is kept clean and covered, you should be able to attend the funeral without difficulty. Your plastic surgeon will be able to help you if you have more specific concerns/questions. Best wishes.