spap, I'm assuming that the OP is going to need a furnished apt.
Pasca, I owned an investment property near UCLA for 10 years and I never allowed students to sublet (for obvious reasons). Any tenant that would sublet to a total stranger and then 'leave town' takes the risk of having to pay for any damage left behind by that subtenant. let alone any theft of the tenant's (or his/her roommates' belongings).
But, you're on the right track. The OP's best option is to look for an 'apartment to share'. Parking in and around popular areas in L.A. is limited, however, so she might have to pay for parking as well as the 'share'.
A quick glance of Craigslist resulted in the following offerings:
1. Looking for COOL roommate... - $900 (Santa Monica)
2. Sublet, pups are invited. Avail February - $900 / 400ft² - (Santa Monica)
3. Guestroom for rent 5min walk from SMC - $500 / 144ft² - (Santa Monica)
4. beautiful house in Marina del rey to share - $1200 / 2000ft² - (marina del rey, venice, santa monica)
but none of these are for short terms. Maybe, a number of them will pop up in May for the summer months. Hope you're right.