I dont know who needs to hear it, but Snape didn't get upset because Harry saw him calling Lily a mudblood after SWM. Snape got upset because Harry saw him being SAed by James and Sirius. Harry himself is clearly only troubled about the SA part (and about his father harassing his mom). "Snape's worst memory" is a label given to it by HARRY, not by Snape. Why did Harry call it so? Because of the bullying.
Harry had seen several Snape's traumatic memories — school taunting by some girl, poverty, his father abusing his mom — and Snape didn't get mad in any way. Those memories were arguably more graphic then anything Snape saw in Harry's mind, at least from those memories Harry explicitly mentioned for us to know – the worst one was probably running away from a dog, and while we know it was abusive, i wouldn't say that being chased by a dog in itself is nessesarily a sign of long term abuse. None of that was on par with SWM. Snape drew the line at BEING FORCIBLY FUCKING UNDRESSED. by the PHYSICAL COPY OF HARRY. Severus himself, after pulling Harry out of the pencive, says 'Amusing man, your father, wasn’t he?' – because he is triggered by James, he's shaking because of James, his concern at that moment, standing with James' look alike, is what James did to him.
Yes, Snape doesnt have a problem to admit he was a victim of James and Sirius when it comes to murder attempt or physical harm, but isn't it obvious how sexual violence is different from physical violence? That its MUCH easier to admit to being a victim of the latter for most people? Yes, it probably wasnt out of the ordinary in any way aside from the breakup with Lily in terms of cruelty, nothing suggests it was, but it's still sexual violence, and it's traumatic in a different way physical or verbal violence is, and its MORE traumatic when the person who saw it is the perpetrator's lookalike son.
Snape literally dropped Harry a bunch of memories with Lily that he didn't nessesarily have to; even tho his motivation ought to be explained to make Harry trust him – all the explicit memories of their friendship he gave (in all of which he is claiming the fault and doesn't try to whitewash his behaviour, they clearly aren't picked to show him in the best light) had been given willingly. He does admit (in my opinion, extremely disproportionately) his fault at the breakup with Lily. But James is on his mind more then Lily is. James triggers him, mentions of James make him lose it.
Because this is how having an SA PTSD works for many SA victims.




















