Daughters friend, 8 years old, turned up at our house at 10pm at night. Walked around 10 mins to our house, and was outside our front door for 12 minutes. Didn't press video doorbell, but hubby noticed it on phone, app notification from sensor. Took her home, parents were in bed. Told mother this morning, who messaged back, apologised, showed some contrition - but hardly loads. Girl sneaked out, took keys, and locked door. Turned up with teddy and pyjamas for "sleepover". My daughter was asleep upstairs. Some kind of sleepover game at school, but nothing arranged. Do I report to school safeguarding lead?