Multiple roles for one person (child)

We are having a destination wedding and it will be very small. There won’t be a wedding party except we would like to use our daughter who will have just turned 9. Is there a way she could sort of be flower girl, ring bearer and kind of my maid of honour all at once?


My partner and I are planning to walk down the aisle together and thought she could go down ahead of us. We could give her the rings to hold on to. I said she could drop flower petals and initially she didn’t want to, but now I think she likes that idea. I also thought she could be my bridesmaid because I realized that I would need somebody to take my bouquet during the ceremony and I read that the bridesmaid does that.
I’m really clueless about weddings so I hope you guys can clarify a few things for me. If my daughter carries the rings, what does she do with them when she gets down the aisle? Does she give them to the officiant to give to us when the time comes to exchange rings? Does she hold them until it’s time? I’m really not sure how anything works. If she decides she wants to sit after going down the aisle instead of stand next to me, do I just give her my bouquet when I get down the aisle and then have her sit?
Also we are planning to write our own vows and read them from little books I got. What do we do with those books before it’s time to use them? I won’t have pockets, so does to officiant have them to give to us; do we have our daughter hold them?
As you can see I don’t know a lot about the logistics of weddings. Is having my daughter basically playing multiple roles silly or weird? We’d really like her to be involved in some way.