Emma Heming Willis has a poignant takeaway from the “tragic” deaths of Gene Hackman and his wife, Betsy Arakawa. “Caregivers need care too,” Heming Willis, 46, shared in an Instagram video on Monday, March 10. Heming Willis is, of course, a carer herself to actor husband Bruce Willis, who has frontotemporal dementia (FTD). “So this…