If you often have conflict with your mother - in - law, over time, your conflict with her will affect you and can damage your marriage. Here are some ways to avoid having conflicts with her.
Recognize and avoid the triggers: if there are certain things you do that make her act out you should avoid such things. Consider why she might be treating you this way and treat the issue.
Do not focus on the negative: do not dwell on the negative things she says or does to you, do not let her actions bait you into an emotional reaction. Avoid adding fuel to her fire.
Distance yourself, ask your spouse to help with the issue if it is beyond your control, detach yourself emotionally, don’t pick fight but stand for yourself and remember that she’s probably not going to change.