My mother always brings my step dad everywhere is that normal ?

I’m almost 30 and my mother will not hang out with me without her husband my step parent. She brings him everywhere. She is able body to drive and more healthy than him, he’s like 400 lbs over weight on oxygen and he should be home resting. Sometimes I just want to hangout with her and do things with her but she always. She always said when I was in another state that she wanted a better relationship with me and wanted to do mother daughter things. She always put a man before her kids all my life. Sometimes I want to hangout with her and my son. Idk how to handle this because I think my mom wants me to say something so she can accuse me of starting things or drama. She acts like she is scared to face her children alone and she knows when he is around we don’t feel comfortable talking to her or saying personal things. I kinda don’t want to hangout with her anymore if I have to sit in the back seat like a child and be the 3rd wheel to her husband. I don’t have a problem with him at all but I feel like mothers and daughters should be close and do things and go on trips together with the grandkids but every time my mom is with me she has to rush and worry about her grown 10 years younger husband who is a weirdo.