Hatshepsut had a negitive relationship with Thutmose 3rd, this is her stepson/Half Brother. She considered him to have dirty blood and that he could not rule Egypt that is why she after a few years declared herself Pharaoh.
Until she died or left for an unknown reason. Then Thutmose the 3rd had to become Pharaoh. Because of the relationship he had with his mum/sister, apparently he destroyed all her possessions that she had owned and everything she did in Egypt.
Hope that helps