The obvious issue is having in situ needles when she could have a seizure so I would always do an in / out procedure and incorporate some rotation to get the dosage. The second issue is will DN trigger a seizure? I can not provide a definitive answer on that, but the issues she is coming to you for warrant a trial of DN as it would be effective for those. I think you are correct in calling the neurologist and keeping the discussion to the musculoskeletal complaints you are using the DN to correct. The in / out technique will be safe and I have never had DN trigger a seizure in patients presenting like you describe using this technique.
Hope that helps