回复：该不该报警

That's true. If your mother-in-law wants to live forever with you, or she gets green card and wants to stay in your house for rest of her life, you should give him some record.
If she stay away from you, I 'm sure you have less problems with your hu*****and.
I've seem so many MIL ruin the family, even they help kid, nut they totally damage your relationship with your hu*****and.