The easiest way to tell is just to try it. If it works, then you know it works.

But it should work.

There's also an alternative slur removal mod, if you prefer:

https://github.com/recordcrash/homestuck-slur-removal-mod

In contrast with Jonaya's Slur Replacement mod, which tries to find suitable replacement words to fit the context, the linked Slur Removal mod just censors the slurs with asterisks. You could ask your friend which they would prefer.