She will show up eventually in soul chests like I said with the continuous 1-star beginning heroes that show up there.
The other thing is don't put too much emphasis on her or other heroes star levels. If you have her at max promotion level she will still be very strong at what you want her to do. The star system is less important, similar to hero levels. Get that promotion level maxed. Runes are very good as well. A 2-star hero that is max promotion level and well runed will beat a max promotion 5-star hero that is poorly runed.