Reddit mentions of MaMa

I've left this comment to other posts here in the past, and I think it might be right up your alley!

I never see her books mentioned, but Ruby Jean Jensen was my absolute favourite pulp horror author growing up. The book covers are gorgeous in a creepy way, too. I'd recommend HOME SWEET HOME

>His parents said it would be lots of fun. Two weeks in the mountains with nice Mr. Walker. A perfect vacation for a little boy. But Timmy didn't think it was fun. The closer they got to the cabin, the less friendly Mr. Walker's smile became. The scarier the sound of his voice. The more evil the light in the depths of his eyes. Timmy was surprised to find other children at the cabin. He sensed their dread, heard their nightmarish screams, felt their unspoken terror. But then he peeked through the keyhole of the forbidden locked door and saw the bloodcurling horror that awaited him. And he knew there was no escape from the deadly welcome of home sweet home.

and MaMa

>Once upon a time there lived a sweet little dolly. Her porcelain like face was so smooth, just like a baby. Her mouth even had a tiny hole so she could eat and breathe. But her one beaded glass eye gleamed with mischief and evil. She had waited a long time in the attic for someone to set her free...

>Once upon a time there lived a sweet little girl. The only place she was happy was in the attic with her dolly. If she could have seen her little doll's legs kick, she would have been frightened. If she could have felt her little doll's arms squeeze, she would have been shocked. But if she could have read her little doll's thoughts she would have run from the attic forever--for her sweet little dolly only had killing her on her mind...

for a start. They look expensive as hell at first glance but I've managed to get used copies for friends for under $10 with a bit of poking around!