"Mothers' Day" from Deadshot vol.1 #3 (DC, 1988) by John Ostrander, Kim Yale and Luke McDonnell
If you're gonna read John Ostrander's Suicide Squad, and you should, don't forget the Deadshot mini-series that sprang out of it. Deadshot has to deal with his family issues while Marnie, his therapist who's got unprofessional feelings for him, tries to optimistically get him back in pocket. It's a hardcore look at arguably the best character in the Squad, so expect more nihilism than badassery. Never read the mini-series from 2005, so I'll have to let you fill me in on that one.