Can a landlord keep a portion of my security deposit because I took a washer and dryer that was left by the last tenant and was not listed in the lease?

Question Details:

I rented an apartment and signed the lease with a property management co. not the landlord. There is no washer and dryer in the lease but the previous tenant left a set. The management co. told me that if the previous tenant didn't come to get them then I could have them. I recently moved out and gave the washer and dryer to a friend. The landlord withheld $200 of my $1000 security deposit and told me that the units were to stay in the apartment. Can she legally do that if the items are not in the lease and I was told that I could have them? Important Notice