I think the word addiction usually has a negative meaning, so not surprising it may raise concern, or at least curiosity. She probably just wanted to see if this is something you want to discuss in more detail.

I think that people can and do get addicted to other people, or the relationship, experience, etc. Everything can get addictive if it is done excessively, has negative consequences, yet we use it as an escape and don't want to stop or moderate. I was there myself in the past with people once and then it was very hard to shake it. Why is it important when someone is in distress or pain? Because often addictions (whether to a substance or other forms of excessive preoccupation/behavior) develop or expand exactly when we are suffering and try to manage or counter the stress or pain. This may or may not be your case, but how it frequently works.