Narrow feet have a hard time when it comes to hiking boots. Most hiking boots are made wide and deep, making it hard for narrow feet to get a snug fit.
One way you can get the ankle support you need is to modify the lacing as follows. It’s easier than it looks if you follow each step.
1. Undo all the laces except for the 1st 2 or 3.
2. Instead of crossing over to next upper eyelet, re-lace parallel and into the adjacent eyelet
3. Repeat with side lace, same as above. Laces should criss-cross at this point
4. Pull both laces snug
5. Continue remainder of lacing as usual
Now, the laces which would otherwise slide because the eyelets are loops instead of holes, are secure and snug.