Something confusing about the book (not the movie)

In the book Garp was attacked and barely escaped. They would have killed him or at least beaten him up for showing up at his own mother's memorial service. The reason was it was a feminist gathering and he was a man.

But... Here is the part that makes no sense to me: Those feminist women were there to honor the memory of someone who was sacred to them, that being his deceased mother.

So here is the paradox, the thing that makes no sense. If they were there to honor Jenny how could they kill or abuse Garp? Part of honoring someone is honoring their WISHES or what they obviously would have wished if they were alive. No way his mother would have wanted her only son harmed she loved him, so by trying to harm him they were betraying Jenny's wishes. So how the hell was that honoring her? It is a paradox.