<human>: My FH and I have selected our GM and BM and decided not to add his two step-brothers and two-step sisters in the bridal party, but to make the two step-brothers as ushers and include the two step-sisters in another role in the wedding. We have included our biological siblings in the bridal party and were under the impression that the step-siblings were fine with not having those roles. FH mom (whom I love dearly)  has been very generous by offering to pay a large portion of our frugal wedding to help us start out more financially stable. We did not ask for her to help out in this way but she insisted because she is generous and claimed to not have any strings attached with how we spent the money or feeling obligated to follow her suggestions/opinions. She recently made known that she has a very strong desire for all of the step-siblings to be included in the wedding ceremony more publicly (aka part of the GMs and BMs). In this desire she has started using the argument that since she is paying for most of the wedding we must follow suit in generosity by granting her request (that she placed in an emotional, strong suggestion). My FH and I have mixed feelings about this. We are not intentionally excluding them from the wedding party; we wanted it to stay small and stick to biological siblings and closest friends. We also have no other easy options for ushers. I am torn between my desire to roll over and do whatever is expected of me and stay strong with my FH on what we had decided to do because of decisions made based on what we wanted for our wedding party. We also have not heard from the step-siblings any indication they feel left out. Any suggestions on how to include them in the wedding more publicly without making them junior GM/BM or full-fledged members of the bridal party?

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<bot>: FH mom *really* wants step siblings to be GM and BM when we already made decisions to include steps in other ways in the wedding, please help.