No problem! I will add a little more.

I honestly think after reading your new post that this goes beyond the category of "things get hard" or a "modest amount of damage" or "relationships require work, we can't abandon a relationship so fast".

This is its own different category. Somewhere around, "toxic relationship with lots of bad drama and highs and lows". With illusory, unreal, no longer existing highs and very real lows.

What's real is your feeling that she doesn't value you, because if she did value you, she wouldn't treat you like this. She's not capable of truly valuing you, but that of course doesn't say anything about your real value.

So, I don't know how you measured and evaluated the necessary resources, but it requires more resources than "things get hard in relationships". It would be an infinite amount of resources absorbed in a deep bottomless hole while you get even more damaged and lose more time.

I wish you the best luck either way!