Daughter is 6yrs and lost a top tooth and noticed a gum looking thing hanging in the socket any ideas on what this is only hurts when she touches it?

Swelling: Sometimes the area of tooth loss will Swell, rarely infect. If the entire tooth Came out, unlikely to still be a foreign body In the tissue. Would advise seeing a dentist In person to check it. Dr Ivy fisher with Health tap and can do a virtual health check or Virtual appt anytime by scheduling online.... Welcome!

Normal: That's probably the tissue that made up the nerve of the tooth. It should resorb and disappear in a few days.