Yes, Phoenix will need help with finding a sufficient trigger that leads to a smooth tranformation. Right now the only trigger that they were able to find (in the Graveyward) is inflicting the right amount of pain. He'll appreciate that she won't pity him or anything.
I'm sure him and Livewire will have an odd sort of friendship. While, he'll find her amusing, and enjoys her more rebellious nature. He's more of the sly/sneak type rebel.