THB I would just let them hold her if you feel it is the right time and she is enjoying it. WIth Murray I would let everyone (and it was a disaster often), but if it was nap time for Oliver I just said they could give him a quick cuddle when he woke up - it's not fair on anyone having an OS/OT baby just so they can have a cuddle. 2nd time I had the confidence to know what was in Oliver's best interests. You could always let them swaddle her etc and put her down for her nap so they still get some baby time.
I found that people were perfectly happy to just watch O lying in his bed sleeping soundly and that was preferable to people cuddling a crying boy!