I think you're way off on this one
I don't see what else she'd been doing. I think Lindsay finding out she's adopted, Michael rejecting her, and that she's three years older than she thought is not going to go well for her, especially when its pretty much implied from the premise that her other family members basically abandoned her during that time. Michael made no effort to help her and the only console Lucille could give her is that she loved her more than Gob. George Senior and Maeby may be able to slightly help her out, but I doubt.