Joseph Okpako/WireImage Two weeks after her father died unexpectedly, singer Lauren Alaina thanked everyone who has supported her through such a difficult time, including Jason Aldean and his wife, Brittany. Alaina, 29, and Aldean, 47, were on tour together at the time of J.J. Suddeth’s death, forcing Alaina to cancel shows in Savannah, Virginia Beach and Charlotte to be with her family. “Thank you. I can’t think of much else to say right now ot…