My take is that there is much over reaction on all sides here. The Catechism (CCC 1415) states:
Anyone who desires to receive Christ in Eucharistic communion must be in the state of grace. Anyone aware of having sinned mortally must not receive communion without having received absolution in the sacrament of penance.
It’s as simple as that: only the OP can say whether he/she was aware of having sinned mortally.
However, Code of Canon Law 915:
Those who have been excommunicated or interdicted after the imposition or declaration of the penalty and others obstinately persevering in manifest grave sin are not to be admitted to holy communion.
So the question would be did the priest have reason to believe the OP and daughter were obstinately persevering in manifest grave sin? It seems the answer is likely no, but we don’t know what he may have seen or overheard or thought he had seen or overheard.
Perhaps the priest was overzealous to a fault, perhaps he observed something and acted in good faith from a misunderstanding, or perhaps something in between. There’s just not enough info to make rash judgement or action.
But more importantly, @espiishope247, it’s not clear how recent your mother’s passing was. I offer up prayer for her and your family. You’ve been given a grace in desiring confession and a return to your faith, I hope you have followed through with this resolution.