kdclement,
Depression can be hard on those close to us. Especially if they just want to see us well. Have you and your gf considered seeing a couples therapist? Just a few sessions can really help, I think - especially to work out when you can lean on her, when she can lean on you and when the better thing might be to lean on someone else like a T, or a friend etc...
Anyway, it sounds like you are doing a lot of very hard work!

It sounds like things are overwhelming now. Just take one step at a time...
And be gentle with you...

E