I really need some advice/ an objective point of view on how I am handling/ feeling towards my mil. My fiancé and I have been together 8 years.

My future mil has been dropping hints and talking about our wedding for years and when he proposed to me last month obviously we are all excited. Since then she has basically been acting like it’s her wedding to plan, but this all comes out as “helpful” suggestions.

She wants a big wedding, I don’t. I thought I had made this clear to her but she keeps throwing suggestions at us and her mother (his grand mother) even took me to one side to tell me how much she wants to be involved.

My fiancé doesn’t seem to be able to tell her to back off and this evening she has told us that she has found a venue for us to use- it’s a Manor House that she works at so we’d basically get it for free. It’s just not my style at all and nor is it his. We’ve fallen out about it because I was clearly unimpressed and i told him I thought we had a plan - he said “it’s just an offer for f**ks sake”. How do I tell him that I feel uncomfortable and don’t like her offers or suggestions without coming across as attacking her?