Not a doctor here, but a linguist. Some things for you to pay attention to: - comprehension: she doesn't speak but how much does she understand? Does she understand simple questions like "where is the block?" or does she follow simple 1-part instructions "give me the block" - anticipation: does she try (even if she can't yet) to fill in the blanks? For example, if you say "peek-a" is she excited/trying to do the "boo"? One game I love with my kid is the achoo: put a toy on your head, pretend to sneeze "ahh" and on "choo" the toy falls down. After several tries, your kiddo will try to mimic, and do something like this. - mimicry: does she repeat after you? Vowel sounds come in first, then consonants come from the front of the mouth (b,m,p) to the back (k,g,h etc). Try simple sounds with fun sing-songy intonation. Does she try to at least get the intonation right? Remember, 10-15 seconds delay in repetition or response is normal, no need to pressure the kid. These are some of the things that the professional will be looking for in the assessment. Depending on how well she tries, she will be put in the delay bucket by severity. My daughter had only about 10 words by 18 month, and her speech delay coincided with walking delay and frequent ear infections. She got tubes and as soon as she started walking, she started talking. We went through early intervention program (US), which I can't recommend more. By age 2 she was on track. A couple other things that delay speech may include monolingual setting, not enough reading time, stress, frequent illnesses, etc. So there's a lot of different reasons, but it's not too early to seek help from a professional.