Is this avoidant behaviour?

Thanks for your input, Mary!
I couldn't really connect this to any attachment style either.
Very moody, yes. She also posted some articles about mental health and depression, so she might not be super stable.
Even anxious people like me can have pretty strong highs and lows. Being in touch with one's feelings and not being able to control them sounds like anxious attachment to me.
Ah well, we'll see how it goes. I still focus on attachment styles first and foremost, and do my best to avoid DAs (nothing personal, ah!)

Glad you're not offended
Are female DAs truly less common? Are there any reliable statistics? It certainly does seem to be that way.
I sometimes think that it is worse to be a male AP, because of the "common accepted fact" that women seek confidence in their (male) partners more often than men do.
So being a man with low confidence is quite a serious handicap!

What do you mean by "fine"?

The only other indication that she might be DA is that, according to a match tree of a set of different qualities on the dating website we used (which translated into a "match score"), she is less sensitive than me.
This and that she doesn't seem to be keen on online communication. But even secure people could be like that.

It sounds like a potential rollercoaster. Better strap in.

To me, this reads more like "Hi, I'm bi-polar!", but there isn't anywhere near enough info to gauge if that is an accurate assessment.

Red flags all over, you guys were right!@tgat Jaeger
Well, I knew that something was off just by reading her FB profile, but now I know for sure.

I'm just back from my second date with her, and it turns out that she is FA.

The first hour of the date was normal, and then she mentioned that she had suffered from depression and anxiety.
Nothing surprising according to her FB profile. She talked more about it, and said that she has never been in a relationship at the age of 29. Her reason was that she had had a lot of stuff to work on with herself, that she didn't feel ready then, but that she feels more secure today, and that is why she finally just started dating. Wise.
She seems to be very aware of how she functions. She told me how she can suddenly withdraw from people for several days in a row. She admitted that it was weird to talk about all this on a second date, but that she felt safe to reveal this with me. Since she has studied some psychology, I asked her if she knew about attachment styles, and she did! I guessed that she was FA and she agreed with it.
Then she asked about me, I revealed that I was AP and that it would surely be complicated between us if we were to be together. She could see that (especially with the withdrawing and me needing consistency).
The only positive thing is that we're both insightful and working hard on becoming more secure. According to what she told me (I'll skip the details), she seems a lot more stable now than a few years ago.
Oh, and her FA ways seem to have developed because of some borderline sexual abuse as a child over many years, but apparently not because of insufficient parenting.

I've become very good at detecting red flags very early on! Not wrong this time either.
Another disappointment. She seems to be a very interesting person besides that, we have a lot in common.

First time I meet an FA btw!

alpenglow, wouldn't FA work with AP if they are aware? I think FAs see both sides of the coin. Sort of seems a better fit than DA? Just curious.

I think if the stars align, that might be the case. The thing is, even with awareness, there will be times of relapsing into old patterns. Those situations will compound the issues for both partners as they tend to lack the 'grounding' to consistently offer the other what they need in order to be able to continue.