Honestly, your gpa doesn't seem too low. I don't know too much about the PsyD programs, but do have a couple of friends who applied to MFT programs. Their gpas were much lower than yours and they were able to get into respectable schools. My advice is to focus on your personal statements and reflect on how you have learned and benefited from your volunteering experiences and internships. If you can come up with a good personal statement along with decent GRE scores, you should be fine.