I couldn't do that to one of my children despite their political or other foolish views.
Instead, I quietly prep for them now as well, not even sure if they will ultimately arrive. If they don't, then I have the increased ability to help others whom I deem need and deserve it.
But I figure it is likely these family will show up with their hat in hand when/if the SHTF. They will get my help then if they need it - but only if they agree beforehand to follow my rules and be a part of my team and not a sponge. If they refuse the deal, then they have made their choice to leave and seek help elsewhere. If they stay, they can expect no free lunches or preferential treatment and we will work together to make it through.
It is my view any Liberal-minded (or not properly prepped) family members who might make it to my door will change their views mighty quickly when the rubber hits the road and the cold reality of hunger and danger arrives at their door and their comfy bubbles are burst by genuine events. They certainly already will be at that point if they manage to arrive at my door. So, I prepare for them to join us and help us all survive together. After all, there is strength in numbers.
In the Bible, the man forgave his Prodigal Son when he finally left his squandering and foolishness and returned home. I think this is likely to be the case with a lot of folks if the SHTF.
I would rather accept the burden of extra prepping now (foolish old dad!) and hope for reconciliation with others in my family when the time comes rather than turn them away to certain disaster and perhaps an awful end. I would have a hard time living with my conscience for doing so just because of their current foolishness.
If the gal is truly a liberal, when you bring her in to save her butt, she will take the first opportunity to rat you out to the ‘collective’.