Nailed it! Triplets!
Two boys and a girl. Born in this order: Josh, Matthew and Kaisa. And the heir...? Josh!

The had very little money and weren't prepared for triplets but a new room had to be built.
Very basic but they didn't have more money.
Gisbon called over his friend Warren. And asked him for a large loan.
Madilyn cradling Josh.
Gibson asked the family over for more loan asking. From Jackson and Sirli.
Madilyn asked Bruce for some money since Gibson had asked him before already.

The family was really struggling financially.
Madilyn got a job too now. She went for something she could do from home. Joined the social media with focus on PR.
Oh yeah and they had finished the living area...
Another angle...

More money asking...
They were calling over random sims at this point.
When this girl came over, Pupper paid attention to the guests finally.
Well, the sims were not best friends or anything but the family got the money.
They just gotta start building and finishing the house.

Madilyn and Pupper. This little guy needed attention and love aswell.
One night the puppy started acting weird...
She grew up!
More love for her!