That sentence is ungrammatical, IMO. A little aloof as became [i.e. befitted] an aristocrat does not call for or "license" subject-verb inversion.
A little aloof as became an aristocrat, did she enter the room. NO
A little aloof as became an aristocrat, paid she no notice to the child begging for food. NO
His mouth on fire from the hot pepper, took he a bite of bread. NO
If the first clause is an absolute construction, S-V inversion is not licensed in the main clause.
A well regulated Militia being necessary to the security of a free State, shall the right of the people to keep and bear Arms not be infringed. NO