What is asked of you, and what is not yours to carry
Four things next to each other. The Qur'an says nobody carries another person's load, and that nobody is burdened beyond capacity, which is worth hearing if you have been treated as the person responsible for a parent's happiness.
Then two reports that pull in what looks like opposite directions and do not. The first raises the bar on you: the one who truly maintains ties is not the one who repays good with good, but the one who keeps the tie with relatives who have cut him off. Read plainly, that asks more of you, not less.
The second is a man who told the Prophet that he keeps ties with relatives who cut him off, treats them well while they treat him badly, and the answer he got was that if it is as he says, he is as though feeding them hot ashes, and an angel remains with him against them as long as he continues. Notice what is not in that answer. He is not told he has failed, and he is not told to go back and try harder to be understood.
Qur’an and Sunnah
لَا يُكَلِّفُ ٱللَّهُ نَفۡسًا إِلَّا وُسۡعَهَاۚ لَهَا مَا كَسَبَتۡ وَعَلَيۡهَا مَا ٱكۡتَسَبَتۡۗ رَبَّنَا لَا تُؤَاخِذۡنَآ إِن نَّسِينَآ أَوۡ أَخۡطَأۡنَاۚ رَبَّنَا وَلَا تَحۡمِلۡ عَلَيۡنَآ إِصۡرࣰ ا كَمَا حَمَلۡتَهُۥ عَلَى ٱلَّذِينَ مِن قَبۡلِنَاۚ رَبَّنَا وَلَا تُحَمِّلۡنَا مَا لَا طَاقَةَ لَنَا بِهِۦۖ وَٱعۡفُ عَنَّا وَٱغۡفِرۡ لَنَا وَٱرۡحَمۡنَآۚ أَنتَ مَوۡلَىٰنَا فَٱنصُرۡنَا عَلَى ٱلۡقَوۡمِ ٱلۡكَٰفِرِينَ
God does not burden any soul with more than it can bear: each gains whatever good it has done, and suffers its bad- ‘ Lord, do not take us to task if we forget or make mistakes. Lord, do not burden us as You burdened those before us. Lord, do not burden us with more than we have strength to bear. Pardon us, forgive us, and have mercy on us. You are our Protector, so help us against the disbelievers.’
Qur’an 2:286
قُلۡ أَغَيۡرَ ٱللَّهِ أَبۡغِي رَبࣰّ ا وَهُوَ رَبُّ كُلِّ شَيۡءࣲۚ وَلَا تَكۡسِبُ كُلُّ نَفۡسٍ إِلَّا عَلَيۡهَاۚ وَلَا تَزِرُ وَازِرَةࣱ وِزۡرَ أُخۡرَىٰۚ ثُمَّ إِلَىٰ رَبِّكُم مَّرۡجِعُكُمۡ فَيُنَبِّئُكُم بِمَا كُنتُمۡ فِيهِ تَخۡتَلِفُونَ
Say, ‘Should I seek a Lord other than God, when He is the Lord of all things?’ Each soul is responsible for its own actions; no soul will bear the burden of another. You will all return to your Lord in the end, and He will tell you the truth about your differences
Qur’an 6:164
Narrated `Abdullah bin `Amr:The Prophet (ﷺ) said, "Al-Wasil is not the one who recompenses the good done to him by his relatives, but Al-Wasil is the one who keeps good relations with those relatives who had severed the bond of kinship with him
Sahih al-Bukhari 5991graded sound, sahihaynfull report
Abu Huraira reported that a person said:Allah's Messenger, I have relatives with whom I try, to have close relationship, but they sever (this relation). I treat them well, but they treat me ill. I am sweet to them but they are harsh towards me. Upon this he (the Holy Prophet) said: If it is so as you say, then you in fact throw hot ashes (upon their faces) and there would always remain with you on behalf of Allah (an Angel to support you) who would keep you dominant over them so long as you adhere to this (path of righteousness)
Sahih Muslim 2558graded sound, sahihaynfull report
Translation: M.A.S. Abdel Haleem, The Qur'an, Oxford University Press, 2004.