My FMIL is ruining my engagement! (very,very long vent)

So my FMIL is a devout Catholic (goes to Church a few times a week and lives by the Church). My FH went to Catholic school his entire life until college (which is where we met). I am Jewish. We have been together for 7 1/2 years and religion has never been a issue to either family. We celebrate each holiday with the respective parents. FH and I personally do not believe in organized religion but do things for the parents.

Well, when we got engaged we decided that, for our parents, we would get a rabbi and a priest for the cermony. We booked Woodbury Country Club while FIL's were away on vacation for a month (they are retired!). That was 3 months ago!

I have since come to find out that FMIL went to a meeting with her priest (without us and without even telling us about it) and found out how to get a rabbi to come to the church to perform the ceremony. She is trying to plan MY wedding. Why is she meeting with a preist about MY wedding? How dare she? Then she has the nerve to ask me to do this! I told her NO! Not only is that not my wish, but it would break my parents hearts. FH had already told her to drop it, that we were doing it at WCC as a 50/50 celebration and she still tried to manipulate me into it.

She has refused to acknowledge our wedding yet. She told me that all she knows is that when she got home from vacation, my FH told her about some 'thing' that is happening next October 3. That 'thing' is my wedding.

To top it all off, it is all she thinks about and she is trying to guilt my FH. She started with him last week at a wake! She was upset that we were booking a photographer when we haven't set the ceremony in stone yet (which we have but she wont acknowledge!).

Also, she threw us a family 'e-party' last week with her brothers families and cousins and other family. Every single person there asked if we set a date yet. We set our date and booked WCC like 3 months ago. She told noone! My FH was so upset that his family had no iea what was going on. Why did she throw an 'e-party' then? She is strange. Aggggggghhhhh.

She is making our lives miserable. FH's aunt said that she is going to do this until the day of the wedding. She won't quit! I can't handle it!

Sorry for the long post but I needed to vent! Thanks for listening!