Betty Broderick’s Son Says Her Actions Are ‘Unforgivable,’ Tries to Remember ‘Good Times’

Betty Broderick‘s son is trying to process his grief now that she’s gone … because, while she obviously killed his father, he also thinks of the good times.

Daniel Broderick — the son of Betty and Daniel — tells TMZ … obviously his relationship with his mother became complicated after she killed her ex-husband and his new wife in 1989.

That said, Daniel also tries to remember the good times … saying she was an amazing mom back in the day — engaged, intelligent, fun and funny.

Despite his mom’s actions, Daniel says he and his three siblings — who were all at Betty’s bedside when she passed — loved both of their parents … and, they’ve tried to find a way to move past the tragedy for their own sake.

What Betty did is unforgivable, Daniel says … but she’s also their parent. The siblings aren’t absolving her of responsibility, but they need to move forward for themselves.

We broke the story … Betty passed away at a California medical facility on Friday where she was transported last month. She was in the middle of serving a 32-year to life sentence. Near the end of her life, Daniel tells us Betty suffered from a number of septic infections … and broke several ribs during a fall in prison.

Betty killed Dan Broderick and and his 21-year-old assistant, Linda — with whom he had an affair and then married — in 1989 after stealing a key to their house from her daughter. She was sentenced to 2 consecutive, 15-year-to-life terms.