I've used Baclofen for spasticity and muscle stiffness. You can ask her doctor if it's available where you live.

How long as she been taking LDN? Sometimes you have to take it for a while before you notice any results. I take it and noticed an improvement almost immediately. Keeping a diary of symptoms and daily struggles will help. I did that and after reading back over my early days on LDN versus now I can definitely see a steady improvement. Sometimes it's so gradual that you don't notice it until you look back over the course of several months - then you see the improvement.

Good luck to you and your mother. It's so nice that you're involved with her care and want to help. She's a very fortunate Mom!