Not attending because there isn’t “much of a community there” is no excuse. We don’t attend Mass because we like the community at that church. We attend because the sacrifice of Our Lord happens at each Mass. We are obliged to attend on Sundays and Holy days of Obligation. This obligation is not conditional on us liking the community at that church or getting on with the priest at another.
No its not. That is the teaching of our Church. We are all obliged to attend Mass on Sundays and Holy days of Obligation. Failing to do so may put a person in a state of grave sin. There is no proviso that says “Life happens, so that makes it OK”. we are obliged to go, unless we are prevented from going by illness, or there is no church anywhere in that locality that we could attend, or one that we could get to by driving a reasonable distance.
That does not fulfil her Sunday obligation, not at all. A heavy courseload is not an excuse either.

The majority of the congregation in Catholic Churches seem to be women, and most of the ministries and positions held by lay-people seem to be held by women. How would anyone find it hard being a woman in the Catholic Church?
There are many such people in the Church. Why is this an issue.?
I think you need to tell your friend that we go to Mass because of our relationship with Jesus, not because there is a good sense of community and a priest that you like and get along with. The latter two things are good if they exist, but they are NOT essential. A person cannot be excused from not attending Mass because they don’t get along with the priest, they don’t like the community there, or they’re too busy with their work or studies. Is one hour on a Sunday (plus travel time) really too much time to put aside in our lives for Our Lord?
If she doesn’t like the priest, then just attend Mass anyway. It’s not like she is obliged to make any conversation with him. Outside of his saying the Mass, just have little to do with him.
And we
are required to go to confession if we miss Sunday Mass (or a Holy Day of Obligation) and we are not allowed to receive Holy Communion until we do so. And she must attend Confession, so go to another priest, somewhere, anywhere. I really don’t know why so many people seem to have an issue with going to Confession. We all sin, and most of us sin mortally on occasion. We need to go to Confession to have our souls healed. I don’t know why you would seem to take offence at the suggestion that she needs to go to Confession. If you miss Mass you MUST go to Confession (unless you are incapacitated or there is no Mass that you could have possibly attended) that is the teaching of our Church.
It’s not about her and the priest, it’s about her and Jesus. Her relationship with the priest, his dissolving of the Parish Council and creating a new one (as is his right as Parish Priest), her like or otherwise for the community at the church, etc. are all in the end irrelevant. These are earthly things and cannot be used as excuses for us neglecting our obligation to Jesus.
I’m sorry if any of the above seems harsh, I really don’t mean to be harsh. But I think your friend ought to stop thinking about her own feelings, and go to Confession and then go to Mass every week (regardless of her issues with the priest). Mass is about Jesus, not the priest, the Parish Council or personal relationships with any individuals in the parish.