Muslim marriage- is it a red flag if future mother in law asks me to come and visit her before marriage?

So I've known this guy for 7 months, we're planning to get nikkah done in January. His mum was saying she would like me to come and visit before the nikkah.
I told my mum this, and she said it shouldn't be like this. Women shouldn't go to a man's mother's house before marriage, whereas my future partner can come and visit our family whenever.
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5 mo
Asks of me to come and visit *
Muslim marriage- is it a red flag if future mother in law asks me to come and visit her before marriage?
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