AHR summoning advice/statistics question

My current situation is thus: I have every character on the AHR banner, sparked twice (Elise and Freyja since I had all 6 others). I'm at 80/120 with pity built up to 7.5%.

I would very much like a second Elise to fodder to my H!Mia for Charm/Aria/Shackle, since unfortunately Elise is too good a unit and I don't want to sac my only copy. Charm being the main draw. I know 7.5% pity is still 92.5% chance of pain, and then it's further split by color sharing (although an extra Freyja would be fine too), so I'm not exactly in great shape. However, the odds of Elise ever being non-FEH-Pass sparkable again seem quite low, and this is otherwise a strong banner to build a third spark on (probably another copy of Ryoma).

Is it worth trying to keep summoning on this banner at these odds? (Disregard orb count, I'm solely asking in terms of likelihood of pulling her and of future banners allowing sparks for her).