Wedding Drama

So I am the grooms mother and I absolutely love my new DIL, I'm looking for others opinions on why the wedding planner/coordinator treated me and me only so rudely during the rehearsal, wedding day and the reception. So, here's the back story. Due to some family drama in the brides family after the wedding planning had already started the brides mom said that she wasn't paying for anything. We, both sides of the family had already agreed to split the cost of the venue and catering and I had already paid the deposit on the venue. So the mom refused to pay for anything. Me and my husband took over the total cost of everything and we treated my DIL just as if it was our daughter's wedding. She and I did all the planning, meeting with decorators, caterers, etc. We also paid for their honeymoon. I thought and tried really hard to not be opinionated, she picked all her own decor, vendors, wedding coordinator, etc. I was the one that suggested hiring a wedding coordinator so that I could enjoy the wedding and rehearsal myself. I only had one request and that was that my son walk me down the isle to my seat because that's how we done it at my oldest sons wedding. The brides mother was not involved in the wedding planning, picking out decor, she didn't go when we went dress shopping, nothing. Myself, the bride and my DIL went and got her dress. Her mom was always invited to go with us but always made excuses why she couldn't go. So fast forward to 3 days before the wedding and I am running around finishing up last minute stuff, getting very little sleep, working at the venue helping the decorators, etc. Before the rehearsal I had never met or even spoken to the planner/coordinator, ever!!!! Didn't even know what she looked like. The day of the rehearsal, I had been at the venue since 9:30 am, helping the decorators, making sure the rental stuff had been delivered, meeting with the caters, etc. so when the coordinator got to the venue 30 minutes before the rehearsal started, she never introduced herself to anyone she just walked in the reception venue and started criticizing the decorating. The decorator said I'm sorry who are you? She said oh I'm the coordinator. So once rehearsal started and she started lining everyone up to walk in she totally left me out and did it on purpose (she's not a good actor at all) So everyone is lined up to walk in and I say what about me, she says I'm sorry who are you (very rudely), I did I'm the grooms mother and told her my name. She oh well she, talking about the bride, didn't write your name down. Then I said well my son is supposed to be walking me down. She said well we're gonna put you right here because this is what the bride wants. So she literally just stuck me in the line, no escort, nothing. So all the wedding party was looking around like what the heck. So it was completely obvious that she targeted me from the beginning by not only me but all the party. The brides mom even said, she might want to go back and see who it was that signed her paycheck. This was on the wedding day because she still talking rude to me, making rude comments, etc. very unprofessional, It was very strange, and I still just can't understand why she treated me like that. Also one of the groomsmen heard her telling her assistant that her job was to keep me distracted with little things. They did not include me in any of the pictures with my son getting ready, etc, except for the ones I asked for. They took a picture of my husband acting like he was putting his flower on not me. She tried her best to exclude me from everything but include the brides mother in everything and treated her like she was royalty. Please help me make sense of this.