How should I tell my mother in law

Drea

Long story short my husband and I are leaving in December but his mom is always up our ass if we’re not home. Where are we and when we’re coming home. She’ll see my posts of where we are and she’ll have the nerve to call or say in person where did we go. She made us come home early one time cause my husbands dog was acting weird like back off. Idk how to tell her something myself, not anything rude but like she don’t need to be worrying 24/7 we hardly ever go out anywhere. Ever since we got married in September she’s been this way. My husband doesn’t think anything of it and it’s honestly so annoying.

What can I tell her myself without saying anything mean because I don’t want to be like that I just want her to give us space and time alone