My soon to be mother in law picked out my engagement rings.

I've known my boyfriend was going to propose sometime soon. Yesterday I found out he isn't the one who picked out the ring set. I truly couldn't care less about the rings, just the fact she picked them out and not him. He could give me a ring from a gumball machine for all I care. If I say something I'll sound ungrateful. I dont know what to do:(

Update

He had no say in what the ring looks like at all. He didn't ask her to buy it. She just did.