I agree with what you said, but it doesn't take long to acknowledge someone's message
Each person is unique; so as I get to know more and more people, I marvel at how ones can have a great variety of ways of not being and doing what I would think they would.
With my lady friend, for just one example

she constantly switches and does not do things that I was sure she would do. But she is always ready to care about others, or at least able to get over something she starts to complain about.
So, if I am to share with her, I need to be ready for however she is really going to be and do things. Be ready with the "longsuffering" (Ephesians 4:2) > stay ready with love, and do not let anything not perfect have power over me to get me mad and sad and bad.
Plus, I can be the one who is wrong. If I start to get nasty and controlling inside myself - - I am the problem, and I need to get right first. And then maybe ask her to speak for herself about what she is doing > she often tends to say a reason which is caring about others, not just a practical reason like I might have for things I do. So she can help me to be more loving and feeling for others, and not only practical and logical.
It says >
"Husbands, love your wives and do not be bitter toward them." (Colossians 3:19)
So, my first priority needs to be not to try to get what I want with her, but make sure nothing has power to even start to get me bitter, and pray and be creative in love. And in case she is wrong, this approach in me can help to restore her out of a problem.
I took care of my mother with dementia, I still had time for others....
So, thank God that you have been there for your mother. And yes have time to keep on giving even while you go through things.
But others might not have your realization that we should do this; and so God expects us to be ready to help those who are not giving and responsible and considerate like we are. They haven't got a clue, may be; they can need to be brought up.
But we need to be humble and patient so we can minister this. Real change can take time, because it can take a while for God to truly change our character and not only our acting and gestures.
But I suspect certain people can get self-righteous and self-pitying about how they are the only ones doing the giving. But Jesus kept on giving, didn't He? !!!
"And I will very gladly spend and be spent for your souls; though the more abundantly I love you, the less I am loved." (2 Corinthians 12:15)
she hasn't always been nice and has treated me poorly..when i explain to her, it hurts, she says i am overthinking..that is gaslighting.
Well . . . if this is so - - she could be a less mature person if your husband led her to the Lord. You two could have been much more developed, than she would be.
But . . . also > it is possible that someone just makes a gesture prayer to get saved and she still needs Jesus.
So, get with God in prayer in His love so you can be the example that these people need. And discover how God trusts you with genuine and with needy people as you be His example in His sight.
If your husband could do what he did, I do not guarantee he ever got with the real Jesus or ever did real ministry with genuine conversions and maturity as results. So, she could be a victim, for all I know, not a product of real Christian ministry.
"Test all things; hold fast what is good." (1 Thessalonians 5:21)
Make sure with God, then.
I won't share anymore with her, because she is clearly not interested and not listening. I have been very supportive and It would be nice to acknowledge my messages rather then being ignored.
Do what God blesses and encourages you to do. Read what worked for David when he faced such a disaster > 1 Samuel 30.
The enemy took the wives and children of David and his soldiers. So, what worked? Not their crying and talking about stoning David. But David got encouraged and strong with God in prayer, then did what God had him do. And that worked. And David stayed with leading in God's family caring and sharing way.
I forgive and continue to pray for her.
And do not let a wrong person have power to get us the wrong way. In case he and/or she has not really gotten started with Jesus > "without Me you can do nothing," Jesus says (in John 15:5). So, we do well to trust Jesus to guide us according to all He knows.
"'Take My yoke upon you and learn from Me, for I am gentle and lowly in heart, and you will find rest for your souls.'" (Matthew 11:29)