Hello @isabelle2,
I’m so sorry to hear what your daughter is going through right now. In terms of making sure any spells hit their intended target, I second what Katerina said about using a taglock - even something like their name included in the wording of the spell can help give clear direction. You could also include a line like:
“This spell shall only hit its target, [name]. It will not cause harm to anyone else.”
If you’re still looking for good spells to remove a toxic person, here are a few. Freezer spells are good for “freezing” someone or certain actions in place, while Cord Cutting spells are better for removing bonds entirely.
Just a thought from the mundane side, but even when I was living in Poland (a country whose current government has, unfortauntely, been very anti-women in their policies) I remember hearing about services, programs, and organizations to help women in situations of domestic abuse. There are often local programs, in-country programs, and (if she’s in the EU), EU-wide help programs available to women in need.
I’m not sure what is available where she is living, but it could be worth looking into for some immediate help and safety for her.
Whatever you choose to do, I’m wishing only the best for you and your daughter. May she be safe, protected, and well - so mote it be 
Many blessings!