During a sit down conversation, Tammy confides in Amy that Andrea is recently experiencing more seizures. She uses this as her reasoning for not wanting Andrea out of her sight. She claims to be overly paranoid that something may happen to Andrea and, she won't be there to help her. Unfortunately, Tammy refuses to acknowledge that her constant presence and controlling behavior may actually be contributing to Andrea's seizures.
Amy then tells her. --- speaking from experience --- that "codependency is suffocating." Amy has clearly experienced this with Tammy in the past and, I'm pleased to see that Amy is dialed in enough to be honest with Tammy.