What a MILF would be a mom type of woman with a child technically. If you decide on age thats preference but i'd go so far to say 30 and up.
not really. If you take the term mother, then you can be a mother at the age of 15. and younger... so the term MILF technically means mommy first and then everything else coded for by the other three letters. yes, childbearing before a certain date _sometimes_ leads to the father being imprisoned (for committing sexual acts against an underage girl) and as a result the mother will be a single mother due to circumstances. but since in our case the family is complete, that is, the husband and wife live together, we can assume that they had childbearing at a "legal" age. and therefore - the minimum age difference between a son and a mother cannot be less than 18 years - sorry, I could be wrong, I'm not particularly strong in legislation. in an ideal legal version, if now the son is 20, then the mother is definitely 38.
although in a different VN ("Restore her career") Adrianna seems to have given birth at 16 and at her 37 her son was 21 (according to some information in the game, the son is 21 - although according to some signs, the son is no more than 17, by the way, these are already my conjectures.) - but apparently then she did not apply for her father in order to enter paternity on the birth certificate of the child - because perhaps she "worked up" the child during attending parties