Myself, I'd always argued in her hate threads that her behaving like she did in EP1 was just because of her pregnancy hormones and whatnot. I knew it from experience...
I'm glad I did not blackmail her.
She was so nice to Clem in EP2, and when she let her listen to the baby's kicks, I was smiling like an idiot. It was such a sweet scene! And she also confides her secret to Clem anyway if you hadn't blackmailed her in EP1. I do think she is really sorry for the way she acted in EP1.
Her love for Alvin seems so sincere too. "I love you , silly bear!"
On my first playthrough, I accidentaly let Alvin die, and oh my god, that was so damn sad. The way she was crying and screaming his name... I just had to rewind it to fix it :[