Angry with Mummy!

Mummy was happily outside having dinner with her friends. Daddy fetched me back tonite. I am angry because till now almost 11pm, Mummy still not back home. I called her earlier to ask her come back right away but she said she will be late. I am unhappy and I hung up her call. I want to sleep with her tonight but so late now, she still not back home!!! Why she is always with her friends???