Did A Ghost Save My Sisters Life?

Me and my mum were talking a few days back about mine and my sisters childhood until she told me a story that really got me thinking... But first I'll tell you a little about me... Yes I am 15, but I have always believed in ghosts/demons and anything like that and now thanks to this site I'm willing to share the few experiences I've had.

So my mum began telling me about that when I was a baby we had to move to a bigger house because of our growing family, so we moved to a place in Derby, (England). The man we brought the house off was a very god fearing person and had only owned the house for about 2-3 years but wanted to move immediately, but my dad did not believe in ghosts and neither did my mum so we decided move in. The first year came and went with nothing happening until about half way through the second year my sister was asleep in her cot and my dad was walking upstairs, she began to wail so my dad decided to check on her but he couldn't open the bedroom door and he was wildly shouting for my mum to come and help. When she did the door swung open and my sister simply stood and stopped crying but she wasn't looking at my parents she was looking at the corner of the room. Thinking nothing of it they wheeled the cot into their room and went to sleep.

This happened a few times throughout the year. But one day my dad was out side gardening whilst my mum was inside caring for Robyn (my sister) when she heard a clatter upstairs so taking Robyn with her she had a look. As she went into Robyn's room she had noticed the shelf above her bed had fallen directly into the cot but luckily no one was hurt so she moved the cot into the middle of the room and returned downstairs to see the sofa had been silently pushed in front of the back door. By this time she was quite nervous and wanting to move. But later that night after she had put Robyn to bed and they were asleep she felt a tugging on the duvet until it was violently ripped off. She immediately woke and heard a whisper through the baby monitor she could not tell what it was saying though but thought of us and ran to see if we were ok. I was fine but my sister was choking on her own vomit and had began to change colour.

Had the ghost saved my sisters life?

We did in fact look into the history of the house and found that a man had called and drowned in the cellar back in the 50s. I hope that one of you can give me some answers thank you for reading.

Ps I posted this on my phone so if there are any auto corrects I apologise.