1st: Do you know
2nd: who is causing Bouchard all this grief
cause (verb), make someone do or feel something
to cause someone to do or to feel something
EX: Someone is causing Bouchard to feel a lot of grief.
is causing: present continuous verb
Bouchard: object of the verb
to feel a lot of grief: object complement; e.g., Bouchard is feeling a lot of grief.
Causative verb: Someone is making/causing Bouchard to feel something he doesn't want to feel.