My mom is not happy about my engagement

Hi my name is Mayra, My bf and I have been together for 7 years. We have been leaving together for 6 years. My mom was never ok with him from the beginning. She didn’t see him attractive nor mature for me. I’m am 32 and he is 27. Ever since I got pregnant at 14 years old, I mature very quickly and became a very independent mom. Living on my own going to school And working. Long story short I left their fathers dad when my kids were 6 & 9. 2 boys. I met my boyfriend a year after and have been together ever since.
My boys and boyfriend have a good relationship. More like friends. He’s always said that they only have one father and he will never get replaced. But I have to say he has been in their lives more than their dad has and knows more about them.

I just got engaged Christmas day 2018 . It was the best proposal ever, knowing that my whole family was there and that means everything to me. And also my best holiday! I am extremely happy!!

I was so excited to tell my parents and family that we had set a date and we will be getting married next year 2020. I got good feedback from my brothers and sisters. But NOT from my mom. As I go a visit her 2 days ago I was letting her know that you exact date and a venue that we have chosen. (She looked at me and said, I just think he wants to marry you for your money. You better get your house that you’ve been saving for, and get it before you get married to him and he takes that away from you. Your sisters and brothers have been saying it to. Don’t you dare pay for your wedding either, that’s your kids money. Not his. You better be careful with your money. And goes on mention my Brothers and sisters and brother-in-law’s about their opinion on my engagement. And how soon I’m getting things done already for the wedding. She goes on by saying you’re too excited for now but let some days go by and it will all go away. I looked at her and said don’t you ever involve my brothers and sisters this is all you, this is what you think. Don’t you dare try to get us To me mad at each other. Your a suck person. If you are worried about my future talk to me about it. Don’t speak for no one else.
And she says. OK I don’t want you to marry him. I don’t like him for you! To Make things worse my kids heard everything. I left my moms house heartbroken and very hurt. I tried not to let my tears run down my face with my boys In the car. As soon as I got home I stood in my car while my boys went inside the house. And bald out crying.
I Sent out a text message to my brothers and sisters letting them know I will not be attending my moms birthday party that followed up that weekend. She decided to go to my job as I was working, on a busy day ( I’m a waitress) asked for my section. She had her breakfas, did no conversation with her, as I was dropping the check to her she says : don’t take everything to heart what I said I didn’t mean it. I looked at her and said you didn’t mean it and you don’t have to attend our wedding.

*** FYI my family is a very united family. We are always together for every holiday birthdays etc.
But now I have second thoughts if my whole family is not happy for me ???