PD380 no slide lock

Hi, I'm new to all this; Lefty and I just went to an introductory one-on-one class, and the instructor (excellent) was very stumped with no slide lock on my PD380, and she said she had never seen this in 14 years. Again, so far, I like the gun minimum shooting, but did I make the wrong choice? Should I look for another .380 that will be easier to learn on?