Age, and medical conditions and medications have a great impact the the rem sleep cycle. Dreams are a culmination of chemical imbalances caused in the mind. So there are a couple of things you can do.. which are as follows
1. Recheck the medications.
2. Keep a schedule of getting up no matter when she sleeps and don't let her sleep during the day.
3. Regular food habbits mostly food which is light and not oily.
4. Pranayama
5. Less to no screen time before she sleeps.
6. Warm milk before sleep with a pinch or less of nutmeg no
sugar.(confirm with your doctor)
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