Magic Forums

My friend, a Christian albeit not devout, just bought a new house. On the back porch she found a beautiful clay pentagram with the tip pointing into the house. My magic tradition doesn't use pentagrams and I've only read up on them once.
I read that in the home setting you'd draw them in chalk with the point facing outward during a cleansing. So this doesn't make sense to me.
Would anyone be able to tell me if my friend should be concerned or get rid of it? If she should get rid of it, are there any precautions she should take?

*Extra info, just to add to this strange series of events. She called one day to tell me about a dream where numbers were involved shortly before she closed on the house. Using numerology, turned out the numbers in the dream add up to 1. Her bday & the address of the new house adds up to 1 on their own too. I thought it indicated she is suppose to have this place so now I can't believe the pentagram would be negative.