So is this the bell tower effect? no Danielle took a part back SJI-I363 was base of the bell tower.
I didn't think it had been firmly established that they actually left the equipment turned off, but re-reading it now I think you're right. That would also mean that Caitlyn feeling horny all the time isn't due to the bell tower.
I'm not convinced that this is entirely Miriam's doing though. Amaltheia's horniness started as one of the "moments" in pages 850-852. My take on that is that there is a common trigger for all of those fantasies (they all seemed to come out of nowhere). So while I think that Miriam may have made herself the subject of Amaltheia's fantasies, I don't think she triggered what happened in 850, simply because it seems unlikely that she triggered the fantasy in 851. But I may be reading that wrong.
When Miriam took Amaltheia to buy fish, she said there was someone she wanted her to meet, i.e. Heidi. There didn't really seem to be any reason for her to say that - it didn't come across as much of a meeting. So was the point that simply meeting Heidi would do something - this - to Amaltheia? Might Hitomi pick it up from Amaltheia? Hmmmm.
I'm not sure Miriam's after a foursome either. (Do you mean with Adrian and Jacqui?) After all, she lets Amaltheia down here rather than inviting her along on her date tonight.
I still feel that Miriam is somehow the "anti-Adrian". So I'm inclined to think that there's an intent behind her actions that goes beyond sex.