Flying/mother in law

So it’s a crazy messed up story but my boyfriend, his mom, aunt and our daughter were going to Michigan for a family reunion. I didn’t go crazy prices! I was told my daughter got a free ticket. Didn’t think stand by. My boyfriend was the only one with a purchased ticket and his mom and aunt were stand by. Come to the day of the flight they get there and he’s the only one able to get on. My daughter now I find out was stand by as well. So he’s on the plane and his mom and aunt want to try stand by again with my daughter tomorrow. I’ve had bad anxiety all day over them flying and by this point I’m shaking. I tell them I’m not comfortable with this I’m taking her.

My question is would you feel comfortable letting a controlling mother in law who barley makes time for her granddaughter and the aunt take your 2 almost 3 year old on a plane by themselves without one of the parents there too?