Leave her alone except for feeding and cleaning. It could still be stress, some take longer to adjust. IMO you should remove the shirt but that's just me, I've heard of that too but I wouldn't put a foreign object in with a bp but I'm sure plenty of people do but it could be having a negative effect. I would definitely get the cool side up and it should be at the very minimum 75 but ideally 78-82, 72 is pretty low, if your keeping in glass tanks I would put a che on cool sides with lamp dimmers and if your not using glass tanks then get another thermostat and heat mats for the cool side but either way get it up around 80. The warm side is what should be a little cooler for younger bps, a temp of 88 is good. Your new snake should of been quarantined away from your first one even though they were only bought a few weeks apart.
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