are they also my cousin, or just hers?? please read below?

If you wanted to claim them, they'd be shirt-tail relatives. Since you don't, they're no relation at all.

I had an employee who I found out later was related because her great-uncle married my great-aunt. That made her a shirt-tail relative. Her husband, though, turned out to be an actual third cousin because his grandmother and my grandmother were first cousins. She was also a third cousin by marriage.

My first cousin's husband wanted to know if I knew Tom because he had worked with him for fifteen years. I couldn't help it. I told him I not only knew Tom (the third cousin), but he needed to tell Tom he was related too having married my first cousin. Tom was not amused.

No, you're not cousins. The other cousin is only a cousin of your two female cousins.