And that's because the girl makes the effort to bond with her mother-in-law instead of staying glued to her hubby the whole time.
TOO all the girls out there: I CANT TELL YOU HOW IMPT THIS IS. My brother has been married for two yrs now, and this was a major issue with my SIL. I've known since she was a baby, but she NEVER made an effort first to bond with my mom. It was so annoying. It was always my mom who had to make the effort. Like, she never initiated conversaiton with my mom, and there was and still is a lot of awkward silences, cuz convos go two way, you know. She's getting a teeny bit better. Otherwise she's a sweetheart, like with me and her friends she'll be fine- but with my mom and dad she would get so annoyingly quiet.
It's very important that you make an effort to erase the insecuriites of your future MIL, and make her feel as comfortable as possible with you.