"Quibbling about terminology" isn't "silly" when someone is making a public accusation of a sex crime. Neither of us are lawers, but right there in the statutes you've posted is the line "Sexual contact means any touching of an erogenous zone of another, including without limitation the thigh, genitals, buttock, pubic region, or, if the person is a female, a breast, for the purpose of sexually arousing or gratifying either person." [emphasis mine].

I don't think that brushing up against erogenous zones as part of a search procedure constitues "sexual contact" even though I agree that the TSA employee appears to have failed to give adequate warning and shown a lack of discretion in singling out a new mother in the first place. I don't doubt the indignity of her experience may have been shocking and upsetting, but it stopped well short of sexual abuse.

As other people have pointed out in this thread with rather more eloquence than me, the semantics actually are important here (i) because sexual assault is a very serious crime with significant consequences for both victim and perpetrator (ii) because hyperbole detracts from serious scrutiny of the boundaries of acceptability.