Granted she isn't respecting you and, logically, I know it's a two way street...but I wouldn't ignore my parents or put my phone on silent or not reply. But that's just me.

I'm glad your fiance understands. Sometimes moms can drive a wedge

Perhaps, along with repeating what you are already saying until you are blue in the face, you might introduce the idea that you would appreciate help looking for a house, etc? You might not want the help at all and you don't have to listen to what she says, but it just might detour her thinking a little.

And good luck on this new chapter for you!