@purpleme12 ,I'm so sorry for your loss.
It's a very personal decision and you need to do what feels right did you.
Before my Mum died, she asked us to do her hair and makeup before her funeral as she was worried that if an undertaker did it, she wouldn't be herself.
It was three weeks before we could get a funeral date! She was ice cold and the undertaker had put a foundation layer on her.
We did her hair, makeup, put on her cosy socks , and placed some photos and letters in the coffin. She'd died just before a very important event in the life on one of my DC so we put photos of that in.
Wider family then came as well and we all sat with her. The room was filled with love and we carried out her final wishes.
When my Dad passed my Mum didn't want to see him before the funeral, but we went and sat with his closed casket, again this was right for us.
A good undertaker will support and guide you.
Do what feels right for you and you will have made the right choice. Your love wil be there.