Liz (left) and Mary Cheney at the Republican National Convention in 2004. (Jeff Haynes/AFP/Getty Images) Liz (left) and Mary Cheney at the Republican National Convention in 2004. (Jeff Haynes/AFP/Getty Images)

Mary Cheney and Heather Poe have had enough. The lesbian daughter of former vice president Dick Cheney and her wife didn’t appreciate such a public denunciation of same-sex marriage from a member of the family. Especially one seeking elective office. So they responded in kind. To which I say, “Bravo!” More people need to stand up to those who would put them down, especially if they are in their own family.

Mary’s acerbic sister, Liz Cheney, who is trying to unseat Sen. Mike Enzi (R-Wyo.), reiterated her opposition to same-sex marriage on “Fox News Sunday” yesterday, saying the issue was “just an area where we disagree.” Heather Poe took to Facebook to air her displeasure.

Liz has been a guest in our home, has spent time and shared holidays with our children, and when Mary and I got married in 2012 — she didn’t hesitate to tell us how happy she was for us. To have her now say she doesn’t support our right to marry is offensive to say the least.

Mary concurred. “Liz — this isn’t just an issue on which we disagree you’re just wrong — and on the wrong side of history,” she wrote on Facebook.

According to the New York Times, Liz Cheney wouldn’t comment on the family feud. But what she did say was as irksome as her Fox remarks: “I love my sister and her family and have always tried to be compassionate towards them. I believe that is the Christian way to behave.” You are “compassionate towards” those in suffering, those who are going through trials and tribulations that require emotional, spiritual and monetary help.

Mary Cheney and Heather Poe need none of those things from anyone. But by rebuking Liz so publicly, they are insisting on the one thing that all people and all families have a right to demand: respect. Unlike her father, this is something Liz Cheney — who was ridiculed by a colleague this morning as “like Ted Cruz, only less charming” — seems incapable of giving.

Follow Jonathan on Twitter: @Capehartj