The latter part of Booth you describe was the the real one, the angry drinker, trust me I know all about that dark heart of the human condition . Everything else in the light of day in ones heart, as it were , is just the ‘’down time’’ in between drinking bouts.
As I said, I’ve been studying the Booth family for 30 years. I hope this link works but if it doesn’t, just google Clara Morris. I’m not excusing his crime - it exploded in the south’s face. I am just telling you there was another side of his personality. This is why no one at first believed he could have done it.
http://www.authorama.com/19th-century-actor-autobiographies-5.html