Did Bastila leave the Order before TSL?
Just a random thought, and I'll admit, has little solid backing.
Anyway, is there a chance that Bastila actually left the Jedi Order before the events of TSL? It would explain why she never went to the Conclave of Katarr and became snack time for Darth Nihilus, why Kreia (and the Exile) never added her to the gathering of Jedi (either the EH or DE, though she would have less purpose in the latter), among other things.
Why would she leave the Order? One possibility: Satele Shan. If this individual is a direct descendant, then Bastila had a child, and that could be a legit reason for leaving the Jedi Order.
Weak premise, I know.