My daughters 08 Jeep Liberty's AC quit, I hooked the gauges up to it and it had nothing so I put a little charge to it (I only had 1/2 a can) and got some pressure and found the low side needle valve was leaking
What Ive done so far
Changed the needle valve
pulled a vacuum
TRIED to charge, it would only take a half a can
jumpered the pressure switch (It does have 5 volts, checked that) to try to get the clutch to kick in and I got nothing
checked power to clutch, good
checked ground to clutch, good
What else can I do before I buy a clutch?

Nevermind, I just borrowed an OHM meter. Mine is toast and so is the clutch according to the meter

I've seen those Liberty's with no A/C due to a relay being bad, but most of the time the compressor just gives up.

for some reason this year has no relay