Well, as the title said, Skie will be available now as an NPC in BG2/NeJ2. She will occupy the only empty cell left against Jaheira. Also I turned her into mage/thief (7) with a bit enhanced stats to reflect her unique personality according to her bio. She also has two innate abilities now. You may join her as usual in her father's estate at the following levels (dependent on your PC level):
Level 4: Thief (can dual to a mage)
Level 6: Thief (can dual to a mage)
Level 6 (Mage) / Level 7 (Thief)
Level 7 (Mage) / Level 7 (Thief)
Level 8 (Mage) / Level 7 (Thief)
If she is in the group in the end of BG1 (together with Eldoth or alone), she will be transferred to the empty cell in the Irenicus dungeon. Now we have a mage in NeJ2 in the beginning of the game.
Unfortunately, unlike Shar-Teel, Skie won't be available in the stand-alone version of NeJ2.