Venture Bros season three

[Jelly Bean]

ok I missed almost all of season three except for like an episode here and there, (mostly the finale for season three where Monarch and Dr. Mrs. The Monarch are attacking the venture compound) and I was confused on why Monarch along with his wife where still arching Venture when orginally Dr. Girlfriend was against it and made him give it up as a stipulation to marrying her. I've been searching some of season three to pin point where Dr. Girlfriend changed her mind about it but I can't really find any thing yet.