Her weed boon is now even more necessary, but my elven paladin with about 12 damage reduction destroyed Anoobis.
The problem I have is that she's quite map dependent, and that her boons are most suitable for low-level characters or for high-resist brawlers. Most characters can't get enough value out of her , I find.
You need to really
stack up with Earthmother to get an amount of damage reduction to really matter later on, and I find Paladin is pretty much the only class that can make it work currently. Furthermore, this is largely worthless against heavy hitter bosses unless it allows you to just barely survive a single attack which would otherwise have killed you.
Right now, Earthmother is pretty much only useful for high-resist brawlers. If you're a CYDSTEPP'er or primarily magic focused or even just a hybrid, she offers little of value.