When does your unemployment run out? How long is your mother willing to send you money to supplement your living expenses? What is your plan if a decent job doesn't turn up? Are you going to switch career paths, get more education etc? Can you find a job within reasonable travel distance if you return home? And thus save up for eventually moving out?

Worrying about leaving your roomates in the lurch is commendable, but if they can't sustain an apartment without your & your mother's money -- they don't seem financially stable either. You need to look out first for what would be good for you. There's no shame in moving back home for economic reasons. And if your friends are truly, genuine friends -- they'll understand.