We're wanting to invite an old family friend who use to babysit me when I was little. She now has 4 girls. The oldest girl I am friends with and know, but the other 3 I don't really know. I've seen them all of maybe 2 times.
Do I have to invite all 4 of the girls or can I get away with just inviting the mom and the oldest that I am friends with? or is that rude?