I'm one of Meagan Morris' partners and there's a couple things we've been trying to do about her shitty lawyer:
It's possible, but difficult, to file a complaint against a public defender for being openly hostile or unprofessional in treating their defendant, in order to request a new public defender from the county. Replies like the one he gave above are great evidence that he should not be assigned to someone that he's openly bigoted against. (I've got multiple emails he sent to me that are similar in tone, so I'm not surprised he's sending hateful emails instead of doing his job as a lawyer)
similarly, any emails like this can go into a complaint to the Texas state bar, which we plan to file as well. Luttrell has been reprimanded before for not representing his clients when he was legally required to, so any formal complaints will help.
the fundraiser OP linked is intended for hiring legal defenses for Meagan and the other protestors who were arrested, if we have enough we could hire a competent lawyer and no longer have her fate in the hands of a lazy bigot who still hasn't met her in person.