Please Advice Her: See How My Mum Is Having $e.x With Men In Our House, Just 6 Months After My Dad’s Death, What Can I Do About It?

Men, pray you don’t marry a wife that’ll be looking forward to your death. We live in strange times...
Heres A Request From A Fan: 

Less than six months after my Dad died, our mum started seeing someone else. I knew their marriage hadn’t been great, but it saddened me that she could move on so quickly.

She went to a party with her friend and when I waited till midnight and she had’t returned, I went to bed.

In the morning, I took her breakfast. I opened the bedroom door and, behold, there was someone (a man) on my Dad’s side of the bed…

He grunted and rolled over when he saw me. I was in shock. 

“What the hell is going on here?” 

I yelled then ran out of the room. Sadly, he was the first of many men. 

Most weekends, Mum would go out and bring someone back. Her actions are out of order. Do you think she’s in her right mind? 

Please, Advice her on what to do.