When we last left HBO’s “True Blood,” the war between the humans and the vampires had just reached a boiling point and the air was thick with the threat of impending violence. Well, more violence. A lot of blood is spilled in this show, but there’s a lot of humor as well. More than most shows of its ilk, “True Blood” has managed to strike a fine balance between darkness and light, much like the tenuous truce — now broken — the humans and their undead counterparts had forged. Pam — the bisexual, acid-tongued, bar-owning vampire, who stomps all over human and vamp underlings alike in spike-heeled boots — exacts violence and comedy in equally skilled measure. We checked with Kristin Bauer Straten, who plays Pam, before Season 6 premieres on June 16.