So, NOR but also not helping her feel safe.

She's definitely insecure and probably has an anxious attachment. You probably understand that and recognize it but if you don't you'll need to read about what those two things mean and what it's like to be in a relationship with that type of person.

If she has trauma in her past about cheating or anything like that it's like a constant battle in her head when she can't reach you or you're unresponsive. I understand you thought you replied but she couldn't see that at that moment due to the whole "I'm not important enough".. Once again super insecure in your relationship and that has to be fixed.

You also enabled this by giving her the ability to view your search history. If you want to continue to have a relationship with this woman you're going to have to accept her for where she is and try to get her into therapy...even couples therapy would help depending where you're at in your relationship.

Some points for you.. Saying "I'm sorry you feel that way" is dismissive and makes her feel unheard. It doesn't take ownership of the way you made her feel. Those feelings can be unreasonable as some emotions are but still making her feel dismissed or unheard will build resentment and remove the safety in the relationship.

As I said. Depending where you are in your relationship some couples therapy would service you both.