I agree...it does sound like a woman wrote it. However, I can share this w/you. My xh, as the years have come and gone, can change his writing skills from writing like a kid to a professor.
A father does start out writing "Hi Sweetie" unless he's posting to a female. Makes me wonder where their heads are at. LOL!
If I were the kids, I would ignore it and see if they get another message later on from the land of Mars.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.