So i need some help. My Brother took guardian ship of my sister and baby brother. This was awesome for our family at the time.

(This is all of us in a much happier time.)
However, ever since the pandemic hit, his Girlfriend has restricted me and my mom from seeing the kids. You have no idea how much this hurts me as i have been raising them for the last 6 years.

(me and the sis early on in our little Journey <3)
I only gave them up so i could start my own family.

(This is my beautiful fiance and our new boy, Joey)
It was hard, but i was under the impression they would be safe, and i guess to a very extreme extent, they are. I get being very cautious and scared right now so i backed off. However, his girlfriend doesn't even have any rights to them and it has been months since we have seen the kids. Now i'm told they are sending them back to school. Yet, i still cant go visit...(?)
I don't even work, I've been home for months on quarantine myself. What is your thoughts?