Insight on talking to missionaries

I’m sure it’s different depending on where they serve but wanted to see if some of you guys could give me insight.

Essentially over the summer I got involved in the church and met this missionary and grew a huge crush on them. They got moved somewhere else, we lost contact, & I’m not involved with the church anymore cause it wasn’t for me. I remember one of the other missionaries told me how they can only talk to family/friends via email once a week, and not to message her because she’s not allowed to answer.

Well fast forward to a couple days ago, quite frankly I think those rules are bullshit and unfair to the missionaries so I reached out to her just saying I missed her and wished her the best. Wanted to see if any of you guys could let me know, hypothetically speaking if she were to answer me back would that be against the rules? (Did this over facebook messenger)

Sorry for the long post but felt context would be beneficial. Thanks in advance!