Recording vocals

[AlldayBoogie]

Good afternoon and trust everyone is doing well. I have a question. A vocalist asked me to do something yesterday in the studio and I wasn't able to. I knew what she was referring to but admittedly, I could not execute it for her.

So what did she want? I'm glad you asked.

Basically, she is the type of vocalist who needs to hear how things are going to sound while she is recording her vocals. She wants to get as close to a mixed version of the song, as it relates to vocals, as possible i.e. reverb, delay, compression, and anything else that will make her sound legit coming out the gate. It helps her creativity and spawns different vibes and inflictions in her voice that would otherwise not be there if she just recorded it dry. So I have a few questions which I hope you guys can help me with:
1) My question is how in the heck do I do that?
2) What is that called?
3) And how do I not record the effect?
4) What if I hear something differently after she recorded it but her original voice is affected by the effect she used - Can I ever get the recorded effect off her vocals? I don't think so but you guys can keep me honest.

Honestly, I"m just trying to be great and any assistance to that end will be appreciated. Peace and be well.