Relatives and Newborn

Not sure if this makes sense but lately i've been annoyed... I feel some type of way knowing someone is undressing my child for any reason, I found my SIL and MIL cleaning my baby's belly button with rubbing alcohol... when I told them specifically not to touch it, Also, both my SILs went ahead and changed my baby's diaper. My thing is I tell them yeah hold my baby but if she needs anything bring her to me, I'm not sure why I just feel uncomfortable having anyone doing these things to my child... I'm just being hormonal I guess.