That’s a step in the right direction. You obviously know your mom better, but this is my (hopeful) interpretation: she may recognize that you are somewhere in the LGBT+ space, but she isn’t sure where, or how to bring it up. If she didn’t treat the “non-binary” label in the questionnaire with sarcasm or derision, opportunities like this can be ways for her to innocently broach the subject and feel out where you are at.
Is this transmission or reflection?