Unsupportive Grandmother?

Hi! So I've been with this guy, we'll call him Sam for the last 6 years. We got engaged in September. Leading up to the engagement, my grandmother would ask Sam when and if we're ever getting married.

Sam would tell my grandparents that we would eventually, but he wants to be financially ready for that first. He's had to tell her that multiple times, and I was okay with that.

Fast forward to Sam buying me the ring, he showed my grandparents a picture of it. Now that we are engaged, he told me they were just kind of like "okay cool" and that was about it.

The day we got engaged (this was a month later after he showed them the ring) my grandmother was... well very underwhelmingly excited. She told us that we better get a fence for our house first before planning a wedding. A fence? It's not needed but with the fit she threw, we were like okay fine.

It's been almost a year since we've been engaged and she has not brought up the engagement once since the day we got engaged. She won't ask to see my ring, she won't ask about the wedding. Absolutely nothing. She acts like our engagement doesn't even exist. I'm confused and I don't know how to handle this.

Side note: When you try to confront her about anything, all he** breaks lose. It's not easy. Usually this results her storming off and not talking to you for a few days/weeks at a time.
Unsupportive Grandmother?
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