A sí mismo: quick question
Does the phrase 'a sí misma' agree with the subject? e.g. chica -> misma, chicos -> mismos.
2 Answers
A sí mismo = to himself
A sí misma = to herself
Así mismo = as it is (=right this way) - no gender variation
Yes, the article below is not exactly your context, but it explains that mismo in the phrase así mismo is an adjective (así mismo [adverbio + adjetivo = del mismo modo] and in a sí mismo is a pronoun (a sí mismo [dativo/acusativo del pronombre reflexivo]). Either would require it to show concordance.
The only way it would not show agreement is if were to be uses as a adverb. (see asimismo in article)([asimismo [sin tilde adverbio con el significado de también])
[a sí mismo][1]
[1]: http://culturitalia.uibk.ac.at/hispanoteca/Foro-preguntas/ARCHIVO-Foro/Asimismo-así mismo-a sí mismo.htm