Last night was an "introduction" for her. She's running for the Republican nomination and mentioning the foster kids burnishes her social conservative and family values credentials. While Hillary wrote, "It Takes A Village," Bachmann brought one into her own home.
Doesn't matter to you, I'm sure. You probably think Bachmann is in league with Romney to block Palin's coronation.
She'll pimp the kids until her internal polling tells her to back off. And no I don't care how many children she fostered. Right now they are looking like a political prop.