Great, thank you. I will do that.Just FYI, judges and court clerks tend to get annoyed when people send letters about pending cases. The letters typically go in the court file but are not read by anyone other than a clerk. It would be completely improper for a judge to consider any such communication. I suggest you tell anyone who is inclined to write such a letter not to waste his or her time. If these folks have relevant testimony, they can show up in court and testify or sign declarations (or, in the case of the child's father, he can intervene).
I have not submitted any of the letters, I have them in case it gets that far.
As I wrote previously, mediation is not a hearing. Also, "the divorce hearing" is ambiguous. In the context of any case, there may be any number of hearings. If you haven't already done so, you need to let your lawyer know you have prior commitments and, if there is anything where your attendance is required, your lawyer will need to seek a continuance.