Only thing is Keesha will likely refuse to backdoor her, since she claims to not have any animosity towards her (contrary to her "I can't stand Angie" rants when she's with Libra and the moron twins). And when pushed into a corner I think Angie could compete for HoH without choking and probably win it. But that would mean Memphis would go because Keesha is certain to put him up against Angie since she sees them as a pair. Then you just wind up with Dan taking Memphis' place (likely at Jessie's urging) and nothing is gained except one less floater to bribe for use as leverage, but that goes both ways. If Angie got off, Keesha would have a tough choice picking a replacement. Half the people she foolishly promised not to and the other two would wind up with a survivor that would go after her.
She's going to have more trouble than it's worth going after Angie. Jerry would be the wise target if she wanted to ease through this week and have a shot at surviving the next, possibly a few more after that. They all want Libra gone, but she can go after Jerry and not piss off either side. You piss off Jerry, there is no danger in that. Just say "they all threatened me" and then maybe say "but I'm not wearing any Marines clothing, so it's all good."