Hi 30ish, first of all I've got to really admire your honesty and openness with both yourself and others!!
Until (if you can) "put your finger on" things that have effected you (and I'm guessing you're finding more and more?) and the way these things have effected you it can be pretty hard to tackle things, work through them and move on a little from them.
And maybe for your relationship with your mom to be really whole, genuine, authentic (?) you do both need to share the reality of your journey. It might have hurt her but at least now she's able to see things from your perspective which might have been a little different from the way she was seeing/understanding things.
If I'm right she's helped turn things around for herself and you (??) so however much it hurts then I'm guessing she would still really want to know/appreciate your view if she really cares about you. And that she's going to put aside that hurt in the interests of knowing you better and supporting you in ways she maybe couldn't before.
And you two could use this in bringing you even closer together and in strengthening your relationship. She (and you!) may find it hard at first, but it may open new doors to communication if you can carry on talking about things together.
Really pleased for you that things have improved though, although that does seem to be a lot down to your reflection, insight and real strength of character so WELL DONE!!
And as for: "I usually don’t post my own issues here just because I feel like they are so insignificant compared to what others are going through"
If they are issues to/for you they matter!!! They really do!!!! You absolutely don't have to justify whether they are or aren't significant enough!!!! Issues are issues....hurt is hurt.....pain is pain......that's all there is to it!!!! So please whatever it is, just work up that courage you have today and tell us about it, we're here for you
Alison