Hi why don't you ask your mom for her preference first? If she stays over at night is she expected to take care of baby at night too? Sometimes they will want to have a break by being away so maybe she actually won't mind travelling to and fro. Or it could be flexible arrangement , she wanna stay then stay, don't want then go home. She may want to return to her house to check on things or other family members too.
I think have a chat with her and husband too. The husband should be more accomodating Coz after all this is your mom who is taking care of you. It is only one month.
And frankly clash or not won't depend on staying overnight. It depends on communication and compromising.
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