embarrass (one) about (something)
To cause one to feel shame about someone or something. In this usage, a noun or pronoun can be used between "embarrass" and "about." Don't embarrass him about falling down on stage during the talent show—he's upset enough as it is.
embarrass someone about someone or something
to make someone feel bad or ashamed about someone or something. Please don't embarrass me by mentioning my mistake again. There is no need to embarrass her about her unfortunate sister.