Difficult mother

Hi guys!
I think I just need to vent and I figured maybe I could borrow someone’s ears (or eyes in this case) and just have a little support.
i got engaged last September to my long term bf of 6 years! I was so excited and thrilled beyond words, he is everything I could have hoped for. Anyway my parents were going through a divorce so my fiancé didn’t talk with them before proposing, I am not sure if that’s what caused all the problems that have happened since.

Everything with the wedding planning is great, we found a great location and all the vendors we have wanted have been available and wonderful but when it comes to me having any support whatsoever from my family I come up short. My parents show very little interest. I have asked them to come to the tasting for the venue, dinner to meet the wedding party, asked my mom to help me host a bridesmaid brunch and nothing. I have tried sharing wedding updates and details and get very little to no acknowledgement.
The only time my mom gets somewhat involved is when she demands that i invite a friend of hers who then turned around and invited about 10 extra guests. So friend plus 10= 11! We have 110 guests we can have at the venue, so I get half that’s 55 people. So to have 11 guests I don’t want there just to please my mom seems unfair. Especially since my fiancé and I are footing the bill.
It really is crushing my soul that I don’t have my moms support. We have never had the best of relationships but I wanted to at least leave my home with a last good memory before I got married. Am I being a jerk? I think part of me feels like after the wedding we just aren’t going to keep in touch and that makes me sad.
I know maybe this is too much to unload but I have been diagnosed with depression in the past and even though I have so much to be happy about now I feel myself going down a bad spiral.

If you made it through the end thank you for reading through this!