Lynn and Rick Bynes seem pretty in the dark about the fact that their troubled daughter Amanda Bynes got arrested for DUI early Sunday morning.
In fact, they found out no sooner than we did ... if not later.
Amanda was stopped by police in Van Nuys, Calif., high on Adderall and off her medication for schizophrenia and bipolarity, which she denies she has.
Her folks apparently think she's fully recovered from her meltdown last year, too, because the couple recently declined to renew their conservatorship.
That gave Rick and Lynn full control over Amanda's comings and goings, as well as all her medical, legal and financial decisions, for the past year.
Once it lapsed, though, they just let, believing Amanda does not actually suffer from mental illnesses and is fine on her own. Right on cue, she moved out.
Soon enough, she got her own place ... and failed out of fashion school. Rick and Lynn? They have no idea where she is or what she's been doing.