What it also does is warn us about what to expect to see when Lovey Saltzmann's build-up job blights cyberspace. She, you see, is a reformed domineering mother who seems to see it as her mission in life to make sure that Mira does what she's supposed to and stop worrying so much about Deanna. What she also is is a horrific, logic-defying amalgamation of every sitcom stereotype about Jewish women that have every infuriated the JDL. This Yiddish-spouting irritant seems to be cool and wonderful not only because she wants Mira to lay back and submit to Pattersonian authority but also because she graciously permits them to live in a barn-like, poorly-maintained deathtrap of an apartment so that Deanna can have the ennobling experience of rickety staircases, faulty wiring and unpleasant neighbors.
The fact that Lovey has ruined her life by wanting to be there for her children instead of letting them go and do whatever stupid thing they take a mind to tells us that we can expect some horrible scene in which the ungrateful snot she calls a daughter makes a ridiculous comment meant to show us what a domineering meat-axe Lovey used to be but will only serve to show us what a bonehead her child is. Also, Deanna will be seen as a second chance at being emotionally, physically and morally (but not financially) absent from her children's lives.
Ah, well. At least she doesn't come from a war zone.