Michelle
If she is emotionally spirited, you could start trying to introduce a lovie - during the day for starters perhaps. So when she is losing her cool during the day, and you physically calm her, you do it WITH her lovie too - with Zara, when she is losing it, we have to go and get Frankie, because he helps her feel better. Then as that attachment starts to build, and she makes the connection between comfort and her lovie, it might start being useful at helping her calm down at night.
Zara is emotionally spirited, and tbh, even now at 2.5, without her lovie we would be completely lost.