I agree with Kali. I don't think you are asking her for anything in particular in the letter. Perhaps permission to hug and kiss, even make love. If you think the letter is too strong you can change it. Maybe do 2 letters, a softer one first, and then depending on the reaction a stronger one next. The problem with letting the communication die is that it is so hard to start it up again.

Hi Kali! Scented candles sound nice.