Why would my ex say something like this?

She said that sometimes she doesn’t understand why I accept her.

We just started talking again after she had a rough rebound relationship. And a bit of a mental health decline, but I’m still there for her and supporting her how ever I can.

I wonder, could it be her trying to accept that I still like her enough for a relationship? Especially since she let it slip that she misses me when she was drunk and accidentally called me babe. But also says she ain’t in a position for a relationship following the rebound
Why would my ex say something like this?
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