I definitely feel your pain, Nony. My daughter lives outside of Jerusalem, but my SIL attends kollel in Jerusalem. Everytime I hear of another incident I cry again for our brothers and sisters. It’s heart wrenching to feel so helpless. Yes, we need to daven, we need to say tehillim, we should give tzedakah to help victim’s families. But at the end of the day, only Hashem can control things.
That being said, Flatbusher is correct. Seminaries are probably cancelling planned teylim, and are definitely closely monitoring the girls.