Thank you for the additional information. It helps.
Now that you have mentioned your girlfriend has a history of this behavior and also has a diagnosed with mood swings, her behavior makes even more sense. It also tells me that this is more about her than the relationship.
I would give this a few weeks, maybe three or four, before you contact her again. If she can wait 5 days, then three to four should not be a big deal.
It does sound like she was calling you to make contact and used seeing if you are ok as an excuse. Though it is hard to know exactly what someone else is thinking, based on your description of her behavior that makes a lot of sense to me.
You may want to encourage her to try to take her medications. If she acts out in this manner, she may end up harming any relationships she has, including work and family.
I would enjoy working with you again in the future. Just post your question with my name at the beginning and that will help the other experts know you want to speak to me only. You can also request my help through JA, but requests expire within 10 minutes and then the question is offered to other experts so I may not be able to get to your question in time.