My [52m] wife [50f] needs a long time to get out of "mommy mode" and in the mood for intimacy.

Moms: What do you or your SO do to get you out of "mommy mode" and in the mood for intimacy.

My wife says it's difficult for her to transition from "mom mode" to "wife mode" and get in the mood for sex. I continually struggle trying to figure out how I can assist her with this, and possibly speed up the process. I have no trouble flipping the switch from parent to husband so it's hard for me to understand this need but want to be a good, supportive partner. What helps you to leave parenting outside the bedroom door?

tl,dr: My wife can't easily go "mommy" to "lover", how do I help her.