Greetings @marci!
I think your friend is in very good company- she is lucky to have a friend who also has a heart of gold! 
I think you are very kind to help give her a boost of happiness and love 
Adding to the wonderful suggestions others have shared, I also love the idea of making something she can carry with her. Everytime she looks at it, she’ll get a happy boost of magick and the reminder that she is loved 
You could check out Spells Jars for Loved Ones (cute pocket-sized bottles that make great jewelry or can be tucked in a purse, as well as roller oils for love). Protection Pouches are wonderful as well- bless a small pouch/bag/satchel and fill it with herbs and/or crystals that correspond with love and protection.
A quick protection pouch with easy-to-find/low cost ingredients:
- Dried Rose petals
for love and positive energy - Dried Rosemary
for protection (especially while asleep) and remembering good memories -
Sea Salt
for protection -
Clear Quartz
for spell enhancement, anti-negativity, and strengthening intentions
Wishing you the best of luck, Marci! I hope you and your friend enjoy a lovely weekend. Blessed be! 