CALIFORNIA: Amanda Bynes is reportedly exhibiting worrying behaviour while in psychiatric treatment. The 27-year-old former child star was placed under involuntary psychiatric hold last month after setting a small fire in a residential driveway in her hometown of Thousand Oaks, California. The hold was extended last week and Amanda was put under the contemporary conservatorship of her mother, Lynn. Asource tells America’s Star magazine the former actress’ behaviour has been worrying.  “Amanda tells everyone her name is Sandra. If people call her Amanda, she throws a huge tantrum and storms off to her room,” the source said.“–BN