This is because the reason Connie was in Thunder Bay in the first God-damned place is that she gave into her need to make a theatrical show of her utter debasement and embarrassment given that Phil and Ted were no longer in play. Instead of dating a Milborough resident unknown to Patterson, she moved to a different town to avoid a phantom. She went on to behave as if she was the only person ever who ever dealt with or ever would deal with a step-daughter who distrusted her step-mother and dreamed a futile dream of restoring a family that simply wasn't meant to be.
This need to be the louder, more panicky drama queen making mountains out of molehills seems to have possibly pointed Molly towards sanity in her own behaviour. The realization that her step-mom and the crazy woman with the creepy kid were less adult than she was made it damned easy to move in with Mommy when she got her head back on straight. Why it is that she pressured Gayle into also renouncing a place she might have fit into is easy to explain in strip but harder in reality and makes Molly look like something of a bully. More on that tomorrow.