Not the current conservation I know but this bothering me
Do we necessarily know that Tsukiko is a cleric the comic nor Rich has stated it there's nothing the prerequisites in Mystic Theurge that excludes any other divine class so while cleric is most likely she still could be a Archvist, Favored Soul and even (hypothetically really unlikely though) a Druid, Ranger, Blackguard, Shugenda, or a Spirit Shaman. While most of these are ridiculously unlikely, the point it is never stated she's a cleric so it would probably be better to say Any Divine Spell-caster 3+
Sorry if this has been pointed out before but I felt the need to say it