When my DF and I were choosing our bridal party members, I asked him if he wanted me to include his sister on my side. He said no, it was okay, as I have many friends and it was already hard to choose. But he's having his two brothers in the wedding party on his side and now his sister is feeling left out.
She can be a bit immature and silly, so we both don't feel comfortable asking her to do a reading or such at the ceremony, as we fear she'll just make a big joke out of it...
How can we make her feel included?
(She's 20 year old).