Ive just done the battle of Lelcar, and I'm trying to get the 108 stars..

Recruiting Linfa is a three step process. Note that the first two steps can
Actually be completed before the battle of Lelcar, but the last step can not
Be completed until after.
First, you'll find Linfa in the Inn of Estrise. Speak with her here and she
Challenged you to a game. Play her, and don't even try to win. Linfa cheats,
So don't expect to win this. After you lose 2,000 Potch, she leaves.
Now, head to Yashuna village where you'll find her again (near the water). This time she gives you back your 2,000 Potch and leaves.
The last place you'll find Linfa is in Raftfleet, where you can recruit her. If you don't find her there the first time, you may need to wait until a few
In-game events have passed. To get Linfa to join, ask her, and then accept her
Challenge. She will join you if you win or lose, but if you lose you need to
Pay 5,000 Potch.
Wilhelm is EXTREMELY touchy to recruit. There are a few ways to recruit him. On your first visit/meeting in Raftfleet Inn he will only join you if your
Army has not had many casualties and has had a Victory+ in the War Battle
Against the Hatred Fortress. To be extra careful, bring Viki along.
Another way to have them join is later in the game with Viki in your party. Since Wilhelm likes ladies, Viki is needed. Wilhelm moves from Inn to Inn
After each major In-Game event, so look for him then.
Wilhelm is a missable character, as his his partner Mueller.
Mueller joins along with Wilhelm. Head to the Inn and you'll find Taylor outside. Allow him to look around the
Castle and he'll move on.
You'll find Taylor again by the Sealed Room. Allow him to check it out and
He'll move once again.
Taylor's last location is by Georg's room (by where Kyle usually stands.)
Speak with him and let him check that out. Now he joins your army.