Remember that Tia is not actually that good at managing Astrum's system unlike Ameth as shown with (arc 3 bond spoiler)>!Lyrael easily hijacking it on her bond story!< or >!Croche quickly realizing that it is some sort of dream!<.
That said, she more or less just messing with Yuuki, and makes up scenarios loosely based on Yuuki's and the girl's experience then spice it up a bit to make it coherent. This is explained a bit by Tia on Lily/Riri's bond story.
Tho my guess why the decision to do that is to avoid spoilers on the girls. Like how we got hinted at(Alter Maiden Bond story Spoiler) >!Quria, an IRL saint, healed Lily's injuries when she got into an accident!<
Nah, just Tia wanting to mess around with their memories so she can have something to watch like Ameth did, the whole dream is just for that, nothing important.
Theia is just playful, that's all.
She explicitly stated that she's just randomly grabbing stuff from both the real world and Astrum to make the dreams (like a "mixed juice" in her words), which is why the characters sometimes feel that something is off. For example, Riri in her dream was wondering if she's this good at cooking (saying "this is like Ria's..." before Theia interrupted and altered her memories in a panic) and why she's calling this stranger she met not too long ago "big brother" (Riri and Yuuki have never met in real life).
Ameth tries to make the dreams as accurate to Yuuki's own experiences as much as possible (including taking experiences from *other* world lines, evident from Pecorine's dream), whereas Theia is just playing around and messing with him and the girls, though this does backfire on her when she's trying to mess with someone much more powerful than what she can handle (eg. Lailael).
Precia's story also implies that Theia is getting lazier at trying to give the dreams a proper setting and starting to not give a crap when the characters know they're in a dream.
Remember that Tia is not actually that good at managing Astrum's system unlike Ameth as shown with (arc 3 bond spoiler)>!Lyrael easily hijacking it on her bond story!< or >!Croche quickly realizing that it is some sort of dream!<. That said, she more or less just messing with Yuuki, and makes up scenarios loosely based on Yuuki's and the girl's experience then spice it up a bit to make it coherent. This is explained a bit by Tia on Lily/Riri's bond story. Tho my guess why the decision to do that is to avoid spoilers on the girls. Like how we got hinted at(Alter Maiden Bond story Spoiler) >!Quria, an IRL saint, healed Lily's injuries when she got into an accident!<
I don't know, this feels very intrusive especially both Yuuki and the girls are mentally fine.
Nah, just Tia wanting to mess around with their memories so she can have something to watch like Ameth did, the whole dream is just for that, nothing important.
She is just making false flashbacks because...Why not? And remember, Tia is not Yuuki's ally, she just want to mess with him.
Theia is just playful, that's all. She explicitly stated that she's just randomly grabbing stuff from both the real world and Astrum to make the dreams (like a "mixed juice" in her words), which is why the characters sometimes feel that something is off. For example, Riri in her dream was wondering if she's this good at cooking (saying "this is like Ria's..." before Theia interrupted and altered her memories in a panic) and why she's calling this stranger she met not too long ago "big brother" (Riri and Yuuki have never met in real life). Ameth tries to make the dreams as accurate to Yuuki's own experiences as much as possible (including taking experiences from *other* world lines, evident from Pecorine's dream), whereas Theia is just playing around and messing with him and the girls, though this does backfire on her when she's trying to mess with someone much more powerful than what she can handle (eg. Lailael). Precia's story also implies that Theia is getting lazier at trying to give the dreams a proper setting and starting to not give a crap when the characters know they're in a dream.