Who? I can only get 10 without quarrels, and with quarrels it seems their morale just steadily drops. What's your companions setup?
Ansen, Leslie, Sara, Siggy,Diev, Adonja, Rayne, Alistair, Alyssa,Riva, Kassim, Ediz
or
Roland,Kaverra,Jocelyn, Leth, Julia, Fred, Donovan, Boadice, Julia,Sara, Siggy,Adonja, Ansen
For example if Ansen/Siggy haves 2 ppl they dislikes you need to answer 2 times i dont care and 2 times ansen/siggy have right... ( stuff like that, 2 options for one hater ) they will leave eventualy but with some persuade skills they will last for very long time. Then you wait 2 weeks and get them again.
If they have one like and one dislike you just answer i dont care.