Looking on the internet deeply has found these results:

friend of her is the most popular phrase on the web.

friend of her's 1573,000 results on the web	friend of her 114,300,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	I don't know, some friend of her mother's gave it to her just to annoy her dad. Catherine says you were a friend of her father's. I knew a friend of her brother's. A friend of her husband I believe. She said she got them through a friend of her father's. So, you were a friend of her grandmother's? An enraged Jen embarks on a lengthy legal process using brilliant lawyer Jon Rergen, a friend of her aunty's. She said the owner was a friend of her family.

friend of her's

1573,000 results on the web

friend of her

114,300,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I don't know, some friend of her mother's gave it to her just to annoy her dad.
Catherine says you were a friend of her father's.
I knew a friend of her brother's.
A friend of her husband I believe.
She said she got them through a friend of her father's.
So, you were a friend of her grandmother's?
An enraged Jen embarks on a lengthy legal process using brilliant lawyer Jon Rergen, a friend of her aunty's.
She said the owner was a friend of her family.