Visit my husband grave in Pakistan

My husband died while visit pakistan to sell his property we have gather lots of loan just for him to reach back Pakistan, and he died suspicious as the friend who is with denied his property and my husband died in heart attack as according to their claims, but unfortunately found lots of foul play. I'm so hopeless now that he havent got any justice for his life cause of death. Being a wife that I can't afford to fly as I also have lots of debts on my head now and my husband wish that I will pay those debts using his property, from my point of place I can do anything for me to do his death wish. So I'm hoping that I can gather funds here that I can go to show my visit and respect his grave in his ancestral house in Pakistan and seek for legal action for the person who is liable for his death. I hope that you could help me in this complying my husband death wish and me to see his grave in person.