That's... really not 'more shard than human'.
Went back looking, The Trickster Interlude was a good place to start from the find the specific chapter. The chapter I was thinking of is 120 and not much is actually said about things from the snark's end of things.
I might be mixing up my fics on the full extent of shard emotional suppression but I'm pretty sure Taylor herself made mention of her lack of a response at one point with BA giving an answer that it wouldn't be helpful at the time and thus was shunting it aside for now.
I
am pretty sure that it has been brought up in
this fic that due to Taylor being more deeply linked to BA than most hosts ever get to a shard that she's not operating on purely Human hard/software and is in part running on BA's hard/software, beyond the point most hosts have that going on in the first place that is. It has never been explicitly stated as such but it's been heavily implied that Taylor is a shard emulation of the original Taylor with logical neural drift from baseline. At least that is how I've interpreted the responses BA gave to various questions over various chapters.
It's not that big of a leap of logic, we already know there is a shard who's wheelhouse is electronic intelligences (there is nothing
artificial about them) so having the ability to copy and run a Human mind isn't outside of their capabilities. Though it doesn't seem to be something a shard would do by default, even if they do catch a snapshot of initial host state when connected. That appears to be more physical than mental as Helvetia was allowing the hosts too mentally gone that had been attached to that plant shard to die instead of loading up a backup mental profile so there most likely
wasn't a mental backup.
I could of course be
hilariously wrong about it all, but it's a theory I've come to from the information I've read.