Can someone explain Justice Sotomayor's dissent on the SCOTUS gun ruling?

[elleng]

2. The issues where she agreed, from a quick reading:

'To qualify as a “‘misdemeanor crime of domestic violence,’”
the Maine assault statute must have as an element
the “use of physical force.” §921(a)(33)(A)(ii). Be-cause mere recklessness is sufficient to sustain a conviction
under §207, a conviction does not necessarily involve
the “use” of physical force, and thus, does not trigger
§922(g)(9)’s prohibition on firearm possession. . .

The second category involves a person who intentionally
unleashes force that recklessly causes injury.'

http://www.supremecourt.gov/opinions/15pdf/14-10154_19m1.pdf

Looks like she's reading very literally. I don't know why.