Do ya'll have any tips on applying the drops? She's not amused
You can try wrapping her in a towel to apply the drops. Might be a 2-person operation. Some folks here have tried the "freezing" method using clothespins rather than the binder clip shown here
I strongly encourage you to hold off on further dog introductions until she has been in quarantine at least 2 wks. Especially important now that she is undergoing treatment. Doesn't matter if she's met dogs before. She's in a new environment with new smells and sounds and needs time to acclimate and to bond with you and other human family members. She may well have other health issues that will come to the fore in quarantine and you don't want to find yourself having to treat your cat and your dog. Better safe than sorry.
I would guess that Sahara is somewhere in the F6 range.

