Mother of Groom not on 'top' Table

This is like reading my situation! My mother is very opinionated on our wedding as we are not having traditional elements, she has been discussing this vocally within the extended family who told me this at a family get together recently (amazing what people say after a few drinks!). My Mum making comments about how much it is costing, how much my fiancé is contributing, she doesn't like our colour scheme, drinks reception offering, judgmental comments on my fiancés family and demanding we invite her friends! This all come to a head where we have not spoken for a couple of weeks and I eventually had to call her out as some of her comments are spiteful and hurtful towards my fiancé and his family, and I am so stressed about it being awkward on the day. I have told her if I get wind of one more comment then she is not coming! I don't think you are over reacting, but if her behavior has heightened your sensitivity and is causing you this concern you are right to try and dissipate your anxiety. Regarding the top table, we have done the same except we are not having any parents on it, just us and our best man, MOH, usher and adult BM. I will be honest, your suggestion of having your wife parents on the table and not your mum and her partner is likely only going to inflame the situation and give your mum a reason to kick off, so I would really think about it and the consequence on the day. I would strongly suggest just having your bridal party on the table with you and both sets of parents sat with family on other tables. wishing you all the luck, please don't let it upset your day x

It's your wedding and you should seat people however you both want to, but this would also be a very obvious separation and statement having your wife's parents on your table, but not your mum.

In the end we had a sweetheart table with just the two of us. It was causing too much stress trying to sort out the top table with divorced parents.