My poor sister is going through the Lutheran version of this with my mom. Mom is fixated on getting my niece baptized in the Lutheran church. My BIL was not raised in any religion and my sister and I were raised Lutheran as were generations of our family on both sides. Neither my sister or I are particularly religious. My sister and BIL do not attend a church and had a nondenominational wedding service at a historical mansion.
Well, fast forward a few years and now my mom is not only still fixated on the baptism that hasn't happened, she has asked to take my niece for a week so she can attend Vacation Bible School in the mornings and spend the afternoon at the pool. My sister and BIL are firm that my niece will not be baptized and my mom has expressed to me how she cries "every day" about the non-existent baptism.
I applaud my sister and BIL for standing their ground, while mentally eye rolling every time my mom starts in about my niece and religion. I'm not sure what Mom thinks she is going to accomplish by bringing this up around me, but I refuse to engage the crazy.