i can't believe this! like really

Hello all we are 6 days away from our Big day. Yay first off happy mother's day to all. So here it goes I'm a little pissed right now. My fiance calls his mom today and wishes her a happy mother's day. She isn't too fond of me because of a past situation regarding him. During our 9 yr relationship she was never supportive hardly ever contacted him I would say 2 times in the 9 years we've been together he explained she rarely if ever dealt with him as a kid and he's used to it and for me not to bother he PREFER I don't deal with them. Long story short she neglected him. He has depression and ADHD. The depression was behind her calling him a mistake. Now we got engaged in June 2019. At that time we both had facebook accounts so she saw the ring online and called him stating "Oh you getting married huh? Congrats!" in a sarcastic tone. So we pretty much let that go and didn't think much about it. We had to postpone once due to COVID. but in spite of her being a you know what. I still invited her and the family to come. Well she and the rest of his family declined because of COVID (which is understandable) but my fiance and I both know if it wasnt covid they still would not show. As a result we are ELOPING. His aunt swore up and down that she would come to our ceremony because she wants to be SUPPORTIVE since the rest of the family isn't. The moment we told her NOT to bring a camera because we have a photographer she IMMEDIATELY called us the following day stating she can't come. We dont want our pictures leaked out like that. We feel if you can't attend either ceremony or celebration later you don't deserve a picture. So anyways fast forward to today he calls to wish her a happy mother's day and she then asks him "Are you guys still getting married on Saturday because I thought you wasn't gonna do it i haven't heard anything?" He says yes we are still doing it. She then asks "Are you gonna post any pictures online?" He states "No we will give pictures out to people when they come to the celebration of marriage on our 1 year anniversary?" She then replies "Oh you not posting anything?" and he said "No we don't have facebook accounts anymore we are not activating accounts just to post wedding pics". We both spoke about this afterwards We both feel that she didn't dealt with HIM being your FIRST BORN and ONLY son. Its just sad he told me this is why he doesn't want me dealing with them because he knows how they think and he don't want to be bothered with them. He has told me the only time he wants me to contact them is if he was to die. That's his wishes and I will respect it. Just need some advice I believe as a wife to be did I handled this right. Any suggestions.