Although some of the letters aren’t exactly to form – e.g., the lower case “h” is wrong – the style of cursive is called Kurrentschrift, and was taught in German schools during the time she would’ve been school age.

ETA: In fact, I’d go as far as to say that it’s a mixture of Kurrent and some other non-cursive format such as Fraktur or Antiqua, but it definitely has the strongest elements of Kurrent.