The wife should not leave a husband who understands her but if there is a problem with the wife most likely she might leave her husband due to her reasons.
No one is born has 100 perfect. So mistakes can happen. To forgive and move forward is the gift god has given has a solutions for many problem. To be real is what we need to be. God has crucified without doing anything wrong. All have their own problem like getting angry soon, but on a relationship both has to forgive other persons inability and move forward.
Ladies are of different behaviors, personality and understanding.There are some ladies who will stick to their husband no matter what challenges will face them.There are others who will be a threat and nuisance to their husband even when provided with everything and your understanding will not Matter to them.
I mean , she could . If he's being overly possessive over her or physically abuses her , there may come a time when she can't endure it any longer and eventually , leaves
She will not leave untill he kills her because that much she loves and care her. She has no issues on physically abuse because it was only due to love he is doing. We will not take it serious if it was done by our loved one. Only dead can separate us.
No the answer to your question is no in a relationship where a husband understand his or her wife in any situation that they are in the wife will not leave him or her.