I don't know if you can hear it that well in this clip, but this is what she says every time she gets into the bathtub. She stretches out breathes a deep sigh and announces,

"Aaaaaah. This is the life."

I have no idea where it came from. I'm just thrilled that she enjoys living in my house now, because one day she'll wake up, look around this Hooverville we inhabit, and announce, "Wait a minute! This isn't the life, this is just filth and squalor." And I will play this video for her.