My friend has a plant I call creeping Charlie in her yard. It looks like it may have been planted at one time in a flower bed but has spread to her yard. They moved into the house last August so has no idea where it may have come from. How do I help her kill it in her yard?

I have a plant I think is called a Globe Flower but I can't find it in the easy bloom library. Is there another name I should be searching for? Thank you Dee