Yáʼátʼééh! I am using Multiling Keyboard to type the right symbols in Navajo. This apostrophe ʼ is different from the vertical single apostrophe ' from the English keyboard, and it is called right single curved quote (right single quotation mark, in Unicode), closing smart quote, or also closing single apostrophe. I think it is typed using Alt+0146 in Windows, but I have not tried this method yet.
More information here:
Yáʼátʼééh! Wow, indeed! I can see your greeting has a different apostrophe from mine. Please, sorry if my English is wrong here. I am a Spanish native speaker. I am not using the same keyboard, and even my Android system is old. I think you can try with long pressing to find the curved single apostrophe on your keyboard. There are different types: ' ' (single vertical apostrophe) / ‘ ‘ (these are the left and right quotation marks, and perhaps you are using the right single apostrophe from these) / “ ” (the same but with double quotation marks) / ʼ ' ’ (the first is the curved right single apostrophe followed by the others)
I really hope the different types can be accepted. :)