Kasie, it really is good to see you back especially writing stuff like this even if extremely sad. Loved the content even if sad and loved the rhyming which you made look easy. Acrostics are hard at best of times but to rhyme them too is much harder and you did both: fantabulous!
At first, with the title, I thought this would be about love and how it leaves us wanting more but how wrong was I.
1/ This is a very profound opening and one which left me breathless because I could have written it myself about how we paint these smiles on to mask out our real feelings because we've been strong for too long and we don't know how else to cope with the emotions we're going through but believe me you're not a disgrace and you can achieve anything you like if you put your mind to it. Encumbered is a fantastic word by the way.
2/ The words you use are astoundingly good as they show the emotions you go through (no doubt like me on a daily basis) I.e. harassing, burdens, screaming and extinguishing. Anxiety is a hard thing to deal with as it is but to have these voices screaming at us - telling us that we're no good etc etc is much worse but to deal with both my goodness it's horrific. That last line "Extinguishing her hopes to solid stone" made me gasp for breath.
Couplet/ Yes, I totally get this breathless feeling because of the bad memories but what we have to do is remember the good times instead and I know it's much easier said than done but it's worth a try, right?
Take care and here if you need anything
Edit: if you want a sonnet how about breathless much or breathless days for the extra quatrain??
Cassie, You wrote about something which has become a part of our daily life.
Call it anxiety, stress, depression or darkness they all are the same.
I just hope and pray that for whomsoever you have written it find the way out of it.