Yes, it is possible. Sometimes the trigger to a “big episode” doesn’t come right after the abuse. For example, when someone is just stop working or retiring from work, they have more time to think and less thing to distract them from their traumatic memories. Or later in life they have some problems that stress them out, as stress can worsen symptoms. Or maybe someone watches bad news on television or read about things that relates with their trauma, years after the traumatic thing happened, it can bring back bad memories and triggers the symptoms. Or someone may have tried in the past to cope with stress by using alcohol or other substances, then if they stop drinking and using other substances later in life, it can make PTSD symptoms worse.

When the abuse happens continuously and repeatedly for years though, the result is more likely to be a complex PTSD instead of PTSD alone.

No matter when it comes, PTSD is surely not a welcome guest. I wish you the best for your recovery.