I think you may have misunderstood my statement. Yes, you can cushion people from the effect of trauma as it's happening, by providing resources at or soon aft

I think you may have misunderstood my statement. Yes, you can cushion people from the effect of trauma as it's happening, by providing resources at or soon after the point of trauma. But your epigenome is a record (almost exclusively) of stuff that was observed during your development — it's a log, not a state database. A particular epigenome-affecting gene process would look like: "when I was -6 months old, a process kicked off that began expressing a gene. This gene caused the expression of a protein that acted to detect whether there was enough magnesium in my blood or not. It detected that there was enough — and so the protein recorded [by not methylating anything] that I shouldn't silence any of the copies of the magnesium-transporter in my intestinal-lining tissue cells. Then, the buildup of the protein caused the expression of another gene, which methylated [silenced] the first gene, permanently deactivating this magnesium detection step from happening again." Which means that trauma during early development — if it is not cushioned at the time, such that its impact is felt fully* — will lead to some epigenome-affecting process that looks for "impact of trauma" observing said trauma as happening at the time it activates, and so recording it. That record, within the cell-line descending from the cell that made that observation, is now permanent; that tissue will now do whatever it does with that knowledge, from then on, for the rest of the organism's life. Treating the trauma later, will help the organism psychologically, but will not change those markers (and whatever biological effects they have), because they are markers of "what was at a certain point", not "what is."