Abuse In Terri's Relationships

Terri’s relationships are abusive. While it's clear that Terri and Ed’s relationship is abusive, a little less clear is the abuse of Terri and Mel’s relationship. Ed abused Terri physically, but Mel abused her verbally. Terri seems willing to take any form of abuse without limits. This, however, would just encourage the abusers to abuse her more. it is an endlessly deteriorating cycle. Terri's methods of dealing with abuse seem bad at best.