+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
You didn't legally change your name and you are required to submit the passport as part of the citizenship application, so you're not going to have much choice here.
" so you're not going to have much choice here..." - which means to provide a marriage certificate and an explanation letter linking maiden and "assumed" family name, right?